Question

Find the missing number in the sequence below
1) 30,26,28,_,26
2) 1,4,18,_,600

Answer 1

(1) ans : 24
Explanation :- 30 , 26, 28, _ , 26
In this series , firstly subtracted 4 form number then added 2 .
It is clearly this way ,
30 - 4 = 26
26 + 2 = 28
28 - 4 = 24
24 + 2 = 26
Hence , answer is 24

(2) ans : 96
Series given : 1, 4, 18, __ , 600
this is interesting series because here we have to use factorial concepts
let see, 1.1! = 1.1 = 1
2.2! = 2 × 2 = 4
3.3! = 3 × 6 = 18
4.4! = 4 × 24 = 96
5.5! = 5 × 120 = 600
Hence, answer is 96