Question

15th term of the A.P. a-7, a-2, a+3...…..is​

Answer 1

Answer:

A(n) = a+(n-1) d

A(15) = a - 7 + (15 - 1) (a-2 - a-7 )

A(15) = a -7. + 14 (-9)

A(15) = a-7 +.( -126)

A(15) = a -7 -126

A(15) = a - 133

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Answer 2

Answer:

- 105

Step-by-step explanation:

let nth term of A. P is

$tn = a + (n - 1)d$

tn = -7 + ( 15 - 1 ) x -7

tn = -7 + 14 x -7

tn = -7 + (-98)

t15 = - 105

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