Question

In the picture given below, can you find out which digit will take place of the question mark?

Answer 1

zero because all other number diagonally add to 25

Answer 2

? will be 10.

Check the sums.

3+10+11+1=25
Opposite to it are the numbers with sum
9+4+5+7=25

And
6+5+11+8=30
Opposite to it are the numbers
12+2+6+?= 30
so ? will be 10

Answer 3

Also one can see the sum of the numbers in semi circles
it is 55

6+5+4+9+11+8+7+5=55

For second semi circle
1+11+12+2+10+3+?+6=55
so ?= 10

Answer 4

Answer will be 0
because sum of each section is 25 like this section

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