Find:11th term of the AP 10.0, 10.5, 11.0, 11.2, …………..

1.	Find:11th term of the AP 10.0, 10.5, 11.0, 11.2, …………..
Answer» Given A. P is 10.0, 10.5, 11.0, 11.5, First term (a) = 10.0 Common difference (d) = Second term – first term = 10.5 – 10.0 = 0.5 We know that, n^th term a_n = a + (n – 1)d Then, 11^th term a₁₁ = 10.0 + (11 – 1)0.5 = 10.0 + 10 x 0.5 = 10.0 + 5 =15.0 ∴ 11^th term of the A. P. is 15.0

Answer»

Given A. P is 10.0, 10.5, 11.0, 11.5,

First term (a) = 10.0

Common difference (d) = Second term – first term

= 10.5 – 10.0 = 0.5

We know that, n^th term a_n = a + (n – 1)d

Then, 11^th term a₁₁ = 10.0 + (11 – 1)0.5

= 10.0 + 10 x 0.5

= 10.0 + 5

=15.0

∴ 11^th term of the A. P. is 15.0

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