Question

find the sum of first 30multiple of 5

Answer 1

Answer:

Step-by-step explanation: multiple of 5 are 5,10,15....

A=5. D=5. N=30

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

=30/2(2*5+(29*5)

=15(10+145)

=15(150)

=2250