Which term of the sequence 72, 70, 68, 66, ..... is 40 ?

1.	Which term of the sequence 72, 70, 68, 66, ..... is 40 ?
Answer» Here 1^stterm x = 72 and common difference d = 70 - 72 = - 2 So, For finding the value of n a_n = a + (n - 1)d => 40 = 72 + (n - 1) (-2) =>40 - 72 = - 2n + 2 => -32 = - 2n + 2 => -34 = - 2n => n = 17 So, 17^th term is 40.

Answer»

Here 1^stterm x = 72 and common difference d = 70 - 72 = - 2

So, For finding the value of n

a_n = a + (n - 1)d

=> 40 = 72 + (n - 1) (-2)

=>40 - 72 = - 2n + 2

=> -32 = - 2n + 2

=> -34 = - 2n

=> n = 17

So, 17^th term is 40.

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