Question

Find the missing number in the following geometrical shape.
4
16
9
25
36
64
8
18
?​

Answer 1

Answer:

ok

Step-by-step explanation:

Let me illustrate how the series is formed

9 - 4 = 5

16 - 9 = 7

25 - 16 = 9

36 - 25 = 11

36 - 64 = 28

Hence the whole sequence breaks over here.

Hence the some term is missing between 36 and 64.

So the next difference has to be the odd number following 11 ie 13.

Hence the missing term is 36 + 13 =49

If 49 is inserted then

64 - 49 = 15 and it follows the sequence.

Hence the series comes out to be

4, 9, 16, 25, 36, 49, 64 and so on.