Question

In an arithmetic progressions of 50 terms the sum of first ten terms is 210 and the sum of last fifteen terms is 2565 find the arithmetic progression

Answer 1

Answer:

Step-by-step explanation:

By solving with the help of the equation

Sn=n/2(a+l)

We get n=10

Puting the value in

Tn=a+(n-1)d

By solving this equation

We get d=3

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