Find question mark in this grid with numbers.
9,6,7,3 2,4,7,6 4,1,5,8 3,0,3,?
Hint: You use all numbers to find ? and it is much more simple calculation than you think!
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The grid represents a subtraction operation:
9673 - 2476 4158 ----- 3039
Answer could be
the sum of all the numbers of small squares should equate to sum of numbers formed by the bigger suqares (from Right bottom to Top left)
That is for example:
? = ? (square of size 1 X 1) 0 + 1 + 4 + 7 + 6 = 3 + 5 + 8 + ? (of size 2 X 2) - thereby giving ?=2 and similarly for size 4 X 4.