Question

Find the sum of first 100 terms of the sequence 1.4.7......​

Answer 1

Answer:

hey mate

Step-by-step explanation:

given ..a=1

d=4-1=3

n=100

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

100/2{2+(100-1)3}

50{2+99×3)

50×299=14950

hope it helps

Answer 2

Answer:

can u explain ur questions deeply

actually i can't understand it ❓❓