Question

How many number of series 4,5,6.. Whose sum will be 165

Answer 1

Answer:

Explanation: d = a2- a1 = 5-4 =1

Sn = 165

By applying formula of sn

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

165 = n/2 (8+n-d)

165×2=8+n-1

330 - 7 = n

n =323