231.The 17th term of an A .P. exceeds the 10th term by 7. Find the common difference.
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232.Two APs have the same common difference. The difference between their 100th terms is 100, what is the difference between their 100th terms?
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233.
In an A.P. : Given a = 2, d = 8, Sn = 90, find ‘n’ and an
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234.
In an A.P. Given a = 8, an = 62, Sn = 210, find ‘n’ and ‘d’.
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235.
In an A.P. Given an = 4, d = 2, Sn = –14, find ‘n’ and ‘a’.
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236.
In an A.P. Given a = 3, n = 8, S = 192, find ‘d’.
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237.
In an A.P. Given l = 28, S = 144, n = 9, find ‘a’.
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Long Answer Type
238.
How many terms of the A.P. 9, 17, 25, ... must be taken to give a sum of 636?
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Short Answer Type
239.
The first term of an AP is 5, the last term is 45 and the sum is 400. Find the number of terms and the common difference.
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240.The first and the last term of an A.P. are 17 and 350 respectively. If the common difference is 9, how many terms are there and what is their sum ?
Short Answer Type
Long Answer Type
