Question

CAN YOU
SOLVE THIS?
O + += 30
Fill the boxes using
(1,3,5,7,9,11,13,15)
You can also repeat the numbers
This question calpe in UPSC final exas
held in December 2013 at India
You will be mlad to note that only
C
HT?
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Answer 1

Answer:

0 + 15 + 15 = 30

Answer 2

Answer:

sum of three odd numbers gives an odd number

So, the sum of 3 given odd numbers doesnt results 30

So, it is an impossible factor

here we can't use 3! too

because 3! [3×2×1] results a even number 6

so we cant use it.

If there will be an allowance of factorials, then the answers will be

3! + 15 + 9 =30

3! + 11 + 13 = 30