Which number replaces the question mark?
The answer is 16
Logic,
4-1=3
9-4=5
?-9=x
25-?=y
36-25=11
49-36=13
64-49=15
81-64=17
So in each case the difference is 2. So in place of x i will be 7(5+2) and in place of y it will be 9 (7+2)
Hence
?-9=7
=> ?=16
Your Answer
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