Question

find the sum of series to n terms 2+4+7+11+17+...​

Answer 1

Answer:

HEY MATE!!

i think the question is wrong

Step-by-step explanation:

as per my understanding, the last no. should be 16

2+4+7+11+16

2+2=4

4+3=7

7+4=11

11+5=16

16+6=22

so, the answer should be 22

HOPE THIS ANSWER HELPED U!!

PLS MARK ME AS THE BRAINLIEST!!

Answer 2

Given :- series 2+4+7+11+ 17+...

To find :- sum to n terms

Solution :- This is an A.P. with a = 2, d = 2

Therefore :- Sn= n/2 [2a+(N -1)d]

= n/2 [2 x2 +(n - 1)2]

= n [2 + n -1]

= n ( n + 1 )

Hence, the answer is n(n + 1)