Question

The 9th term of A.P. -15,-11,-7,....49 is

Answer 1

Step-by-step explanation:

A.P SERIES

-15,-11,-7..........49

here a=-15

d=-11-(-15)=-11+15=4

An=49

a9=?

a9=a+8d

=-15+8×4

=-15+32

=17

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