Question

find the sum of 1st 14terms​

Answer 1

ans: sum of first 14 terms is 105

Answer 2

Answer:

sum of first 14 terms of an AP is = 7(2a+13d) OR (14a+91d)

Step-by-step explanation:

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

S=14/2(2a+(14-1)d)

S=7(2a+13d)

S=14a+91d