Given series formed in definite pattern and next number follows the predecessor. 

1)

Find the next number in the series 1,4,7,10,13.....


A) 11

B) 14

C) 16

D) 17

Answer:

Option C

Explanation:

Each number have the constant difference
Number difference between each number is 3.So, next numbershould be 13+3 = 16