Question

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Check weather -150 is a term of the A.P : 11,8,5,2....​

Answer 1

Answer:

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Check whether -150 is a term of the A.P : 11,8,5,2....

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The given sequence is 11, 8, 5, 2,.... –151. Hence, 55th term is number –151.

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Answer 2

Answer:

The given A.P. is 11, 8, 5, 2,

Here, a = 11, d = 8 – 11 = -3

Let the nth term of the given A.P. be -151. Then, tn = – 151

Since, tn = a + (n – 1)d

∴ -151= 11 + (n – 1)(-3)

∴ -151 – 11 =(n – 1)(-3)

∴ -162 = (n – 1)(-3)

∴ n – 1 = -162/-3

∴ n – 1 = 54

∴ n = 54 + 1 = 55

∴ 55th term of the given A.P. is -151.