The sum of first 14 terms of an A.P. is 1050 and its 14 th term is 140. Find the 20 th term.

Given, ⇒ a 14 = 140 ⇒ a + (14 - 1)d = 140 ⇒ a + 13d = 140 ⇒ a = 140 - 13d .......(i) Substituting value of d in (i) we get, ⇒ a = 140 - 13(10) = 140 - 130 = 10. a 20 = a + 19d = 10 + 19(10) = 200. Hence, 20 th term = 200.

How many multiples of 4 lie between 10 and 250?

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The sum of the 4^th term and the 8^th term of an A.P. is 24 and the sum of the 6^th and 10^th term is 44. Find the first three terms of the A.P.

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The 25^th term of an A.P. exceeds its 9^th term by 16. Find its common difference.

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For an A.P., show that :
(m + n)^th term + (m - n)^th term = 2 × m^th term.

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Mathematics

The sum of first 14 terms of an A.P. is 1050 and its 14^th term is 140. Find the 20^th term.

AP

Related Questions

How many multiples of 4 lie between 10 and 250?

The sum of the 4^th term and the 8^th term of an A.P. is 24 and the sum of the 6^th and 10^th term is 44. Find the first three terms of the A.P.

The 25^th term of an A.P. exceeds its 9^th term by 16. Find its common difference.

For an A.P., show that :
(m + n)^th term + (m - n)^th term = 2 × m^th term.

Mathematics

The sum of first 14 terms of an A.P. is 1050 and its 14th term is 140. Find the 20th term.

AP

Related Questions

How many multiples of 4 lie between 10 and 250?

The sum of the 4th term and the 8th term of an A.P. is 24 and the sum of the 6th and 10th term is 44. Find the first three terms of the A.P.

The 25th term of an A.P. exceeds its 9th term by 16. Find its common difference.

For an A.P., show that :(m + n)th term + (m - n)th term = 2 × mth term.

The sum of first 14 terms of an A.P. is 1050 and its 14^th term is 140. Find the 20^th term.

The sum of the 4^th term and the 8^th term of an A.P. is 24 and the sum of the 6^th and 10^th term is 44. Find the first three terms of the A.P.

The 25^th term of an A.P. exceeds its 9^th term by 16. Find its common difference.

For an A.P., show that :
(m + n)^th term + (m - n)^th term = 2 × m^th term.