Question

lf for an A.P .d=11 then t17-t15​

Answer 1

Step-by-step explanation:

Given that,

Common difference=d=11

first term=a=a

number of the term=n

T

n

=a+(n−1)d

T

17

=a+(17−1)11

=a+(16)11

=a+176

T

n

=a+(n−1)d

T

15

=a+(15−1)11

=a+(14)11

=a+154

then,

T

17

−T

15

=(a+176)−(a+154)

=a+176−a−154

=22

Thus,

We get A.P=22

Answer 2

Answer:

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