Question

13. What is the next number in the given series? 3,7,13,21, ___

Answer 1

hey mate your answer is ->

31 because between each of the numbers, the difference is increasing by 2 each time. 3 comes 2 after 1, 7 comes 4after 3, 13 comes 6 after 7, and so on.43 comes 12after 31, the next .

hope this helps you

Answer 2

In the first term 4 is added in the second term 6 is added in the third term 8 is added so in the fourth term 10 will be added .

so your answer is 31

hope it helps u✌