Question

find the sum of 2+4+6+8+........
up to 50 terms

Answer 1

To sum up this series

2+4+6+8+...+98+100

Take 2 common, so you will get

2(1+2+3+4+...+49+50)

We know the formula for sum of continuous series that is n(n+1)2

2(n(n+1)2)

n(n+1)

50(51)

50×51=2550

Sum of this series is 2550

Hope it helps you✌✌........