Question

the first and the last terms an ap having 50 terms are 4 and 100. find its sum​

Answer 1

Answer:

sn=n/2(a+l)

Step-by-step explanation:

terms are 50 so

a is 4

l is 100

50/2(4+100)

25;100 is the answer mark me as brainliest

Answer 2

Answer:

2600

Step-by-step explanation:

n=50

a=4

l=100

Sn=n/2(a+l)

=50/2(4+100)

=25*104=2600