Question

Find the sum of :2+4+6+8+_to 50 terms
3550
3770
3840
2550

Answer 1

Answer:

2550

Step-by-step explanation:

Given series is AS( arithmetic series ).

For this series,

a = first term = 2

d = com. dif. = 4 - 2 = 2

Using properties,

sum of AS = (n/2) { 2a + (n-1)d }

Therefore, { n = number of terms, here n = 50} , sum:

= > (50/2) { 2(2) + ( 50-1 )2 }

= > 25{ 4 + (49)2 }

= > 25( 4 + 98 )

= > 25(102)

= > 2550