Math, asked by simranboparai31, 10 months ago

if the common difference of an ap is 15 ,find a30-a21​

Answers

Answered by sbhandary025
1

Answer:

d=15

a30-a20=a+29d-(a+19d)

=a+29d-a-19d (an=a+(n-1)d)

=10d

=10*15

=150

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