Find the number of terms in the A.P. 12, 23, 34................ 155, 166

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Solution

The correct option is E 15
Solution: Option (e)

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

In the question

$a = 12 d = 11 l = 166 n = ?$

$166 = 12 + (n - 1) \times 11$

$n - 1 = 14, n = 15$

So, no. of terms = 15.

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Find the number of terms in the A.P. 12, 23, 34................ 155, 166

The correct option is E 15Solution: Option (e) I=a+(n−1)d In the question a=12 d=11 l=166 n=? 166=12+(n−1)×11 n−1=14 , n=15 So, no. of terms = 15.

The correct option is E 15
Solution: Option (e)

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

In the question

$a = 12 d = 11 l = 166 n = ?$

$166 = 12 + (n - 1) \times 11$

$n - 1 = 14, n = 15$

So, no. of terms = 15.