A number theory problem by nishant kumar
Number Theory
Level
1
Can you solve the maths puzzle by replace the question mark with the correct number ?
10
8
7
9
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1 solution
Sum of each column & row is 15 so let the ? be x
5 + x + 1 + 1 = 15
7 + x = 15
x = 15 - 7
x = 8