Q3 of 202 Page 9

Is -150 a term of the A.P. ?

a = 11, d = -3

An= a + (n – 1) d


-150 = 11 + (n – 1) (-3)


-150 = 11 – 3n + 3


-150 = 14 – 3n


-164 = 3n


Since, -164 is not divisible by 3


Therefore, -150 isn’t the term of the given A.P.


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