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What number should replace the question mark?

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What number should replace the question mark?

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posted Jul 31, 2015 by Karan Joglekar

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1 Answer

+1 vote

Check diagonally opposite sums.

Start from area right of ?

pairs are like this
15 19
17 21
15 19

so next pair is
17 21

for 21, ? should be 7 that is 8+6+7=21

answer Jul 31, 2015 by Jyoti Mhaske



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