Question

The series 2,10,30,68,... to 20 terms then what is the 20th term?

Answer 1

the series is not right bro you can see the common difference is not same
10-2=8
30-10=20
68-30=38
so we cannot find the 20th term

Answer 2

Answer:

8020

Step-by-step explanation:

Given: 2, 10, 30, 68... to 20 terms,

-->  2 = 1 * 1 * 1 + 1

--> 10 = 2 *2 *2 + 2

--> 30 = 3 * 3 * 3 + 3

--> 68 = 4 * 4 * 4 + 4

Similarly for the 20th term,

-->20 * 20 * 20 + 20  = 8020