Find the sums given below : (AP is given) 3 + 6 + 9 + ... + 150
Answers
Answered by
4
Answer:
Multiply and get answer..
Thanku
Step-by-step explanation:
a=3
D=3
An=150
An=a+(n-1)d
150=3+(n-1)3
147/3=n-1
39+1=n
N=40
Sn=n/2(2a+(n-1)d)
=20(6+39*3)
=20(6+102)
=20*108
Answered by
1
Step-by-step explanation:
this is an A. P series
then using formula :- sum of n numbers
Sn= n/2 ( 2a+(n-1)d)
using this identity in this sum.
Similar questions