If 238 + 0 = 20; 329 + 0 = 8; 637 + 0 = 17 Then 458 + 0 = ??

Answer 1

Answer = 37.

If you analyse the equations properly, you will find the connection between the numbers to be as follows;

The result is equal to the difference of the middle digit in the first number plus the the second number which is 0 is addition of the other 2 digits in the first number.

238 + 0 = 20 => 30 – (8 + 2) = 30 – 10 = 20

329 + 0 = 8 => 20 – (9 + 3) = 20 – 12 = 8

637 + 0 = 17 => 30 – (7 + 6) = 30 – 13 = 17

Therefore last equation will be;

458 + 0 => 50 – (8 + 4) = 50 – 13 = 37

I cheated... Ctrl+C, Ctrl+V... downvote if optional.

Comments

Uhmm, wouldn't the last one be 50-(8+4)=50-12=38. You have used the 5 one more time - in the sum instead of the 4.

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It had to be someone else's fault.