Question

5,2,17,4,(?),6,47,8,65​

Answer 1

Step-by-step explanation:

........................ the number is 5

Answer 2

Missing number (?) = 31

Step-by-step explanation:

The given sequence are:

5, 2, 17, 4, (?), 6, 47, 8, 65

To find, the value of missing number (?) = ?

The given sequence has two sequences.

First sequence (Odd places):

5, 17, ? , 47, 65

The pattern follow:

Previous number + 12, Previous number + 14, Previous number + 16, Previous number + 18, ....

17 = 5 + 12 = 17

? = 17 + 14 = 31

47 = 31 + 16 = 47

65 = 47 + 18 = 65

Second sequence (Even places):

2, 4 , 6, 8

The pattern follow:

Previous number + 2, Previous number + 2, Previous number + 2, Previous number + 2, ....

4 = 2 + 2 = 4

6 = 4 + 2 = 6

8 = 6 + 2 = 8

∴ Missing number (?) = 31