is 150 a term of AP,17,12,7,2.....
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I think you have missed a minus sign before
150
if not then the answer is no since the first term is 17 and common difference is -5
If yes then
a = 17
d = -5
let's assume the required term as the last term
therefore l = -150
n= l - a/d + 1
n= -150-17/-5 +1
n = -157/-5 +1
n = 31.4 +) 1
n = 32.4
since n is in decimal
-150 is not a term of the given A.P
150
if not then the answer is no since the first term is 17 and common difference is -5
If yes then
a = 17
d = -5
let's assume the required term as the last term
therefore l = -150
n= l - a/d + 1
n= -150-17/-5 +1
n = -157/-5 +1
n = 31.4 +) 1
n = 32.4
since n is in decimal
-150 is not a term of the given A.P
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