Question

In an



a.P. The first term is -5 and last term is 45.If sum of all number in the



a.P. Is 120,then how many terms are there ? What is the common different?

Answer 1

....continued

5 × d = 50

d = 50/5

d = 10

There are 6 terms in an A.P

and Common difference is 10

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