Question

Find the missing number
7 ,13 ,37 ,145, 721 ,?

Answer 1

there is no missing number and after 721, 4321.. so on

Answer 2

The missing number in the series is 4321

Step-by-step explanation:

The series is based on a specific pattern

The given series is 7 ,13 ,37 ,145, 721 ,?

The pattern is written as

7 × 2 - 1 = 13

13 × 3 - 2 = 37

37 × 4 - 3 = 145

145 × 5 - 4 = 721

721 × 6 - 5 = 4321

Thus 4321 is the next number in the sequence.