1.

Which term of the AP 4. 9, 14, …. is 254?

Answer»

Given A. P 4, 9, 14, …………

First term (a) = 4

Common difference (d) = a2 – a1

= 9 – 4

= 5

We know that, nth term (an) = a + (n – 1)d

And, given nth term is 254

4 + (n – 1)5 = 254

(n – 1)∙5 = 250

n – 1 = 250/5 = 50

n = 51

∴  51th term in the A.P is 254.



Discussion

No Comment Found