Question

Find the sum of 50 terms of-2,4,10.....​

Answer 1

Answer:

7250

Step-by-step explanation:

n/2(2a+(n-1)d)= sum of n terms

a=-2

n=50

d=6

50/2 (-4+(49)6)=

25(-4+294)=

25 * 290 = 7250

 

Answer 2

Answer:

Here is Your Answer :

a = -2, d = 4 - (-2) = 6

Sn = n/2(2a + (n - 1) d )

S50 = 50/2 (2 × -2 + (50 - 1) 6 )

S50 = 25 ((-4 + 49 × 6 ) = 25 ( -4 + 294 ) = 25 × 290 = 7250

S50 = 7250 Ans.

Step-by-step explanation:

Hope it's help you ☑️☑️