Question

What is the sum of first 10 terms of
A.P. 15,10,5.......
.
.
.
Plz ans fast it's urgent.​

Answer 1

Answer:

-150

Step-by-step explanation:

S10 = n/2[a+(n-1)]

S10 = 10/2[15+(10-1)(-5)]

S10 = 5(15-45)

S10 = 5×-30

S10 = -150

Answer 2

Answer:

150 is the answer of the question