For some Maniacal reason they gave this math problem to 9 year olds. Can you solve it?

[JLW]

 

[Hang on Sloopy]

View attachment 585259

Calculus proficiency should be a high school graduate requirement

 

[pknopp]

They do not use the American Alphabet in Taiwan so yeah, that would be tough. And most likely total B.S.

 

[JLW]

They do not use the American Alphabet in Taiwan so yeah, that would be tough. And most likely total B.S.

No there is a real solution.

 

[pknopp]

No there is a real solution.

I never said there wasn't.

 

[JLW]

I never said there wasn't.

Sorry,..I stand corrected.

 

[occupied]

79365
x 7
-----------
555555

 

[JLW]

79365
x 7
-----------
555555

Very good!

 

[occupied]

Very good!

Praise the lord for calculators.

 

[expat_panama]

I would have preferred:
43210
times 0
___________
00000

 

[xband]

View attachment 585259

None of the symbols are digits they're upper case letters. Stinking and dumb ass Democrat.

 

[JLW]

None of the symbols are digits they're upper case letters. Stinking and dumb ass Democrat.

Damn, talk about dim witted snowflakes.

 

[occupied]

Very good!

It's not even that hard of a problem. I'm no math whiz.

 

[Grumblenuts]

No calculator. I think "for extra credit" was likely left out of the description.

 

[two_iron]

It's not even that hard of a problem. I'm no math whiz.

Of course you're not. But you're pretty good with google and stealing other people's work, so you got that going for you.




That took about 12 seconds.

 

[hjmick]

Praise the lord for calculators.

And Internet search engines...

 

[miketx]

Sorry,..I stand corrected.

Like Dr. Renee Richards?

 

[evenflow1969]

View attachment 585259

Abcde is the answer or 12345. Each letter signifies it's numerical position in the alphabet.

 

[Fort Fun Indiana]

View attachment 585259

Okay:


1) Neither A or E can equal 0.
2) A does not equal 1 (else (A * ABCDE) = ABCDE, not EEEEEE)
3) E does not equal 1 (else, A * ABCDE would yield A as the last digit of the result, not E)
4) A does not equal 2 (else (A * ABCDE) would be a 5-digit number, not 6 digits; 2 * 29,999 = 59,998)

Ruling out more digits for E:

5) If E=2, then A MUST equal 6 (to get (A * ABCDE) = EEEEEE). However, contradiction shows this permutation is not possible, as (222,222 / 6) yields 37,037. So, A would equal both 6 and 3. So, E does not equal 2.
6) If E=3, then A MUST equal 1 to get (A * ABCDE = EEEEEE). However, A cannot equal 1. So, E does not equal 3.
7) If E=4, then A MUST equal 6 to get (A * ABCDE = EEEEEE). However, (444,444 / 6) = 74,074. So, E does not equal 4.
9) If E=5, then A MUST equal one of: 3, 7, 9 to get (A * ABCDE = EEEEEE)
a) 555,555 / 3 = 185,185, so A does not equal 3, when E = 5
b) 555,555 / 7 = 79,365..... ding ding ding ding ding, there is ONE answer!

A=7
B=9
C=3
D=6
E=5

So there is ONE answer, reasoned out in the fewest possible steps without need of a calculator.

Now, what I have not shown is that this is the ONLY answer. This would take more work then what has been done already. So, in reality, nobody in this thread has actually solved the problem yet.

 

[Fort Fun Indiana]

Completing the solution (to show there is a unique answer):

1) If (E,A) = (5,9): 555,555 / 9 = 61,728.3... So, A cannot equal 9, when E=5. So, when E = 5, A = 7.

2) If E = 6, A MUST equal 6 to get (A * ABCDE) = EEEEEE. However, this contradicts the rules. So, E cannot equal 6.

3) If E = 7, A MUST equal 1 to get (A * ABCDE) = EEEEEE. However, we know A cannot equal 1. So, E cannot equal 7.

4) If E = 8, A MUST equal 6 to get (A * ABCDE) = EEEEEE. However, 888,888 / 6 = 148,148. So, E cannot equal 8.

5) If E = 9, A MUST equal 1 to get (A * ABCDE) = EEEEEE. However, we know A cannot equal 1. So, E cannot equal 9.

Therefore, E = 5.

Therefore, A = 7, and, by 555,555 / 7 = 79,365,

B=9
C=3
D=6

NOW the problem has been solved.