Simple Maths Riddle 5
$begingroup$
Here's a special one for you!
I am prime, I am composite
Sum my digits and half; I'll be perfect!
Don't multiply them, I won't yield a thing
But don't worry, it's only the beginning!
What am I?
riddle mathematics rhyme
$endgroup$
add a comment |
$begingroup$
Here's a special one for you!
I am prime, I am composite
Sum my digits and half; I'll be perfect!
Don't multiply them, I won't yield a thing
But don't worry, it's only the beginning!
What am I?
riddle mathematics rhyme
$endgroup$
add a comment |
$begingroup$
Here's a special one for you!
I am prime, I am composite
Sum my digits and half; I'll be perfect!
Don't multiply them, I won't yield a thing
But don't worry, it's only the beginning!
What am I?
riddle mathematics rhyme
$endgroup$
Here's a special one for you!
I am prime, I am composite
Sum my digits and half; I'll be perfect!
Don't multiply them, I won't yield a thing
But don't worry, it's only the beginning!
What am I?
riddle mathematics rhyme
riddle mathematics rhyme
asked Dec 31 '18 at 14:13
TheSimpliFireTheSimpliFire
2,210532
2,210532
add a comment |
add a comment |
3 Answers
3
active
oldest
votes
$begingroup$
Hoping this is good
$2019$
I am prime, I am composite
Prime as in beginning and composite as $2019 = 3cdot673$
Sum my digits and half; I'll be perfect!
$2 + 0 + 1 + 9 = 12$, then $12/2 = 6$
Don't multiply them, I won't yield a thing
$2 cdot 0 cdot 1 cdot 9 = 0$
But don't worry, it's only the beginning!
Happening around the world today!
$endgroup$
1
$begingroup$
This must be the answer!
$endgroup$
– Matt Cremeens
Dec 31 '18 at 14:59
$begingroup$
Yes, you got it! Prime can also mean importance, and it is so for a new year :)
$endgroup$
– TheSimpliFire
Dec 31 '18 at 15:00
2
$begingroup$
Would the wording "Sum my digits and halve" be better?
$endgroup$
– greenturtle3141
Jan 1 at 22:23
add a comment |
$begingroup$
I'm thinking it might be
$39$
$(3+9)/2=6$, a perfect number as its factors sum to the number itself: $1+2+3=6$
$3$ is prime and $9$ is composite
Multiplying them won't yield just a thing, it yields $3times 9=27$ things
I am a bit hung up on this but perhaps $39$ is the beginning of a sequence where these rules hold true (i.e., it's the smallest number produced by these rules). Or perhaps it's the first two of this series: $3^1, 3^2, 3^3, cdots$
$endgroup$
2
$begingroup$
(3+8)/2 is not 6, but 5.5
$endgroup$
– SPK.z
Dec 31 '18 at 14:46
$begingroup$
Nope, unfortunately, but good attempt!
$endgroup$
– TheSimpliFire
Dec 31 '18 at 14:47
1
$begingroup$
@SPK.z I can't believe I made that mistake. I'll edit.
$endgroup$
– Matt Cremeens
Dec 31 '18 at 14:48
add a comment |
$begingroup$
Partial:
Are you
1?
I am prime, I am composite
Some say 1 is prime, some say it is composite
Sum my digits and half; I'll be perfect!
? Perfect number? Perhaps not
Don't multiply them, I won't yield a thing
any n*1 yield n
But don't worry, it's only the beginning!
beginning of natural numbers
$endgroup$
$begingroup$
Nope (1 isn't conventionally a perfect number) ;P
$endgroup$
– TheSimpliFire
Dec 31 '18 at 14:48
2
$begingroup$
Technically 1 is neither prime nor composite.
$endgroup$
– tilper
Dec 31 '18 at 15:44
1
$begingroup$
To note, a "perfect number" is a number whose factors sum to twice that number, or one whose factors (excluding itself) sum to the number itself.
$endgroup$
– Eevee Trainer
Jan 1 at 10:56
add a comment |
Your Answer
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
Hoping this is good
$2019$
I am prime, I am composite
Prime as in beginning and composite as $2019 = 3cdot673$
Sum my digits and half; I'll be perfect!
$2 + 0 + 1 + 9 = 12$, then $12/2 = 6$
Don't multiply them, I won't yield a thing
$2 cdot 0 cdot 1 cdot 9 = 0$
But don't worry, it's only the beginning!
Happening around the world today!
$endgroup$
1
$begingroup$
This must be the answer!
$endgroup$
– Matt Cremeens
Dec 31 '18 at 14:59
$begingroup$
Yes, you got it! Prime can also mean importance, and it is so for a new year :)
$endgroup$
– TheSimpliFire
Dec 31 '18 at 15:00
2
$begingroup$
Would the wording "Sum my digits and halve" be better?
$endgroup$
– greenturtle3141
Jan 1 at 22:23
add a comment |
$begingroup$
Hoping this is good
$2019$
I am prime, I am composite
Prime as in beginning and composite as $2019 = 3cdot673$
Sum my digits and half; I'll be perfect!
$2 + 0 + 1 + 9 = 12$, then $12/2 = 6$
Don't multiply them, I won't yield a thing
$2 cdot 0 cdot 1 cdot 9 = 0$
But don't worry, it's only the beginning!
Happening around the world today!
$endgroup$
1
$begingroup$
This must be the answer!
$endgroup$
– Matt Cremeens
Dec 31 '18 at 14:59
$begingroup$
Yes, you got it! Prime can also mean importance, and it is so for a new year :)
$endgroup$
– TheSimpliFire
Dec 31 '18 at 15:00
2
$begingroup$
Would the wording "Sum my digits and halve" be better?
$endgroup$
– greenturtle3141
Jan 1 at 22:23
add a comment |
$begingroup$
Hoping this is good
$2019$
I am prime, I am composite
Prime as in beginning and composite as $2019 = 3cdot673$
Sum my digits and half; I'll be perfect!
$2 + 0 + 1 + 9 = 12$, then $12/2 = 6$
Don't multiply them, I won't yield a thing
$2 cdot 0 cdot 1 cdot 9 = 0$
But don't worry, it's only the beginning!
Happening around the world today!
$endgroup$
Hoping this is good
$2019$
I am prime, I am composite
Prime as in beginning and composite as $2019 = 3cdot673$
Sum my digits and half; I'll be perfect!
$2 + 0 + 1 + 9 = 12$, then $12/2 = 6$
Don't multiply them, I won't yield a thing
$2 cdot 0 cdot 1 cdot 9 = 0$
But don't worry, it's only the beginning!
Happening around the world today!
answered Dec 31 '18 at 14:58
TomTom
36.6k3132209
36.6k3132209
1
$begingroup$
This must be the answer!
$endgroup$
– Matt Cremeens
Dec 31 '18 at 14:59
$begingroup$
Yes, you got it! Prime can also mean importance, and it is so for a new year :)
$endgroup$
– TheSimpliFire
Dec 31 '18 at 15:00
2
$begingroup$
Would the wording "Sum my digits and halve" be better?
$endgroup$
– greenturtle3141
Jan 1 at 22:23
add a comment |
1
$begingroup$
This must be the answer!
$endgroup$
– Matt Cremeens
Dec 31 '18 at 14:59
$begingroup$
Yes, you got it! Prime can also mean importance, and it is so for a new year :)
$endgroup$
– TheSimpliFire
Dec 31 '18 at 15:00
2
$begingroup$
Would the wording "Sum my digits and halve" be better?
$endgroup$
– greenturtle3141
Jan 1 at 22:23
1
1
$begingroup$
This must be the answer!
$endgroup$
– Matt Cremeens
Dec 31 '18 at 14:59
$begingroup$
This must be the answer!
$endgroup$
– Matt Cremeens
Dec 31 '18 at 14:59
$begingroup$
Yes, you got it! Prime can also mean importance, and it is so for a new year :)
$endgroup$
– TheSimpliFire
Dec 31 '18 at 15:00
$begingroup$
Yes, you got it! Prime can also mean importance, and it is so for a new year :)
$endgroup$
– TheSimpliFire
Dec 31 '18 at 15:00
2
2
$begingroup$
Would the wording "Sum my digits and halve" be better?
$endgroup$
– greenturtle3141
Jan 1 at 22:23
$begingroup$
Would the wording "Sum my digits and halve" be better?
$endgroup$
– greenturtle3141
Jan 1 at 22:23
add a comment |
$begingroup$
I'm thinking it might be
$39$
$(3+9)/2=6$, a perfect number as its factors sum to the number itself: $1+2+3=6$
$3$ is prime and $9$ is composite
Multiplying them won't yield just a thing, it yields $3times 9=27$ things
I am a bit hung up on this but perhaps $39$ is the beginning of a sequence where these rules hold true (i.e., it's the smallest number produced by these rules). Or perhaps it's the first two of this series: $3^1, 3^2, 3^3, cdots$
$endgroup$
2
$begingroup$
(3+8)/2 is not 6, but 5.5
$endgroup$
– SPK.z
Dec 31 '18 at 14:46
$begingroup$
Nope, unfortunately, but good attempt!
$endgroup$
– TheSimpliFire
Dec 31 '18 at 14:47
1
$begingroup$
@SPK.z I can't believe I made that mistake. I'll edit.
$endgroup$
– Matt Cremeens
Dec 31 '18 at 14:48
add a comment |
$begingroup$
I'm thinking it might be
$39$
$(3+9)/2=6$, a perfect number as its factors sum to the number itself: $1+2+3=6$
$3$ is prime and $9$ is composite
Multiplying them won't yield just a thing, it yields $3times 9=27$ things
I am a bit hung up on this but perhaps $39$ is the beginning of a sequence where these rules hold true (i.e., it's the smallest number produced by these rules). Or perhaps it's the first two of this series: $3^1, 3^2, 3^3, cdots$
$endgroup$
2
$begingroup$
(3+8)/2 is not 6, but 5.5
$endgroup$
– SPK.z
Dec 31 '18 at 14:46
$begingroup$
Nope, unfortunately, but good attempt!
$endgroup$
– TheSimpliFire
Dec 31 '18 at 14:47
1
$begingroup$
@SPK.z I can't believe I made that mistake. I'll edit.
$endgroup$
– Matt Cremeens
Dec 31 '18 at 14:48
add a comment |
$begingroup$
I'm thinking it might be
$39$
$(3+9)/2=6$, a perfect number as its factors sum to the number itself: $1+2+3=6$
$3$ is prime and $9$ is composite
Multiplying them won't yield just a thing, it yields $3times 9=27$ things
I am a bit hung up on this but perhaps $39$ is the beginning of a sequence where these rules hold true (i.e., it's the smallest number produced by these rules). Or perhaps it's the first two of this series: $3^1, 3^2, 3^3, cdots$
$endgroup$
I'm thinking it might be
$39$
$(3+9)/2=6$, a perfect number as its factors sum to the number itself: $1+2+3=6$
$3$ is prime and $9$ is composite
Multiplying them won't yield just a thing, it yields $3times 9=27$ things
I am a bit hung up on this but perhaps $39$ is the beginning of a sequence where these rules hold true (i.e., it's the smallest number produced by these rules). Or perhaps it's the first two of this series: $3^1, 3^2, 3^3, cdots$
edited Dec 31 '18 at 15:39
TheSimpliFire
2,210532
2,210532
answered Dec 31 '18 at 14:44
Matt CremeensMatt Cremeens
23229
23229
2
$begingroup$
(3+8)/2 is not 6, but 5.5
$endgroup$
– SPK.z
Dec 31 '18 at 14:46
$begingroup$
Nope, unfortunately, but good attempt!
$endgroup$
– TheSimpliFire
Dec 31 '18 at 14:47
1
$begingroup$
@SPK.z I can't believe I made that mistake. I'll edit.
$endgroup$
– Matt Cremeens
Dec 31 '18 at 14:48
add a comment |
2
$begingroup$
(3+8)/2 is not 6, but 5.5
$endgroup$
– SPK.z
Dec 31 '18 at 14:46
$begingroup$
Nope, unfortunately, but good attempt!
$endgroup$
– TheSimpliFire
Dec 31 '18 at 14:47
1
$begingroup$
@SPK.z I can't believe I made that mistake. I'll edit.
$endgroup$
– Matt Cremeens
Dec 31 '18 at 14:48
2
2
$begingroup$
(3+8)/2 is not 6, but 5.5
$endgroup$
– SPK.z
Dec 31 '18 at 14:46
$begingroup$
(3+8)/2 is not 6, but 5.5
$endgroup$
– SPK.z
Dec 31 '18 at 14:46
$begingroup$
Nope, unfortunately, but good attempt!
$endgroup$
– TheSimpliFire
Dec 31 '18 at 14:47
$begingroup$
Nope, unfortunately, but good attempt!
$endgroup$
– TheSimpliFire
Dec 31 '18 at 14:47
1
1
$begingroup$
@SPK.z I can't believe I made that mistake. I'll edit.
$endgroup$
– Matt Cremeens
Dec 31 '18 at 14:48
$begingroup$
@SPK.z I can't believe I made that mistake. I'll edit.
$endgroup$
– Matt Cremeens
Dec 31 '18 at 14:48
add a comment |
$begingroup$
Partial:
Are you
1?
I am prime, I am composite
Some say 1 is prime, some say it is composite
Sum my digits and half; I'll be perfect!
? Perfect number? Perhaps not
Don't multiply them, I won't yield a thing
any n*1 yield n
But don't worry, it's only the beginning!
beginning of natural numbers
$endgroup$
$begingroup$
Nope (1 isn't conventionally a perfect number) ;P
$endgroup$
– TheSimpliFire
Dec 31 '18 at 14:48
2
$begingroup$
Technically 1 is neither prime nor composite.
$endgroup$
– tilper
Dec 31 '18 at 15:44
1
$begingroup$
To note, a "perfect number" is a number whose factors sum to twice that number, or one whose factors (excluding itself) sum to the number itself.
$endgroup$
– Eevee Trainer
Jan 1 at 10:56
add a comment |
$begingroup$
Partial:
Are you
1?
I am prime, I am composite
Some say 1 is prime, some say it is composite
Sum my digits and half; I'll be perfect!
? Perfect number? Perhaps not
Don't multiply them, I won't yield a thing
any n*1 yield n
But don't worry, it's only the beginning!
beginning of natural numbers
$endgroup$
$begingroup$
Nope (1 isn't conventionally a perfect number) ;P
$endgroup$
– TheSimpliFire
Dec 31 '18 at 14:48
2
$begingroup$
Technically 1 is neither prime nor composite.
$endgroup$
– tilper
Dec 31 '18 at 15:44
1
$begingroup$
To note, a "perfect number" is a number whose factors sum to twice that number, or one whose factors (excluding itself) sum to the number itself.
$endgroup$
– Eevee Trainer
Jan 1 at 10:56
add a comment |
$begingroup$
Partial:
Are you
1?
I am prime, I am composite
Some say 1 is prime, some say it is composite
Sum my digits and half; I'll be perfect!
? Perfect number? Perhaps not
Don't multiply them, I won't yield a thing
any n*1 yield n
But don't worry, it's only the beginning!
beginning of natural numbers
$endgroup$
Partial:
Are you
1?
I am prime, I am composite
Some say 1 is prime, some say it is composite
Sum my digits and half; I'll be perfect!
? Perfect number? Perhaps not
Don't multiply them, I won't yield a thing
any n*1 yield n
But don't worry, it's only the beginning!
beginning of natural numbers
edited Jan 1 at 11:25
answered Dec 31 '18 at 14:35
Omega KryptonOmega Krypton
5,5792849
5,5792849
$begingroup$
Nope (1 isn't conventionally a perfect number) ;P
$endgroup$
– TheSimpliFire
Dec 31 '18 at 14:48
2
$begingroup$
Technically 1 is neither prime nor composite.
$endgroup$
– tilper
Dec 31 '18 at 15:44
1
$begingroup$
To note, a "perfect number" is a number whose factors sum to twice that number, or one whose factors (excluding itself) sum to the number itself.
$endgroup$
– Eevee Trainer
Jan 1 at 10:56
add a comment |
$begingroup$
Nope (1 isn't conventionally a perfect number) ;P
$endgroup$
– TheSimpliFire
Dec 31 '18 at 14:48
2
$begingroup$
Technically 1 is neither prime nor composite.
$endgroup$
– tilper
Dec 31 '18 at 15:44
1
$begingroup$
To note, a "perfect number" is a number whose factors sum to twice that number, or one whose factors (excluding itself) sum to the number itself.
$endgroup$
– Eevee Trainer
Jan 1 at 10:56
$begingroup$
Nope (1 isn't conventionally a perfect number) ;P
$endgroup$
– TheSimpliFire
Dec 31 '18 at 14:48
$begingroup$
Nope (1 isn't conventionally a perfect number) ;P
$endgroup$
– TheSimpliFire
Dec 31 '18 at 14:48
2
2
$begingroup$
Technically 1 is neither prime nor composite.
$endgroup$
– tilper
Dec 31 '18 at 15:44
$begingroup$
Technically 1 is neither prime nor composite.
$endgroup$
– tilper
Dec 31 '18 at 15:44
1
1
$begingroup$
To note, a "perfect number" is a number whose factors sum to twice that number, or one whose factors (excluding itself) sum to the number itself.
$endgroup$
– Eevee Trainer
Jan 1 at 10:56
$begingroup$
To note, a "perfect number" is a number whose factors sum to twice that number, or one whose factors (excluding itself) sum to the number itself.
$endgroup$
– Eevee Trainer
Jan 1 at 10:56
add a comment |
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