The number of terms of the A.P. 3, 7, 11, 15, ....... to be taken so that the sum is 406 is
5
10
12
14
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1
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The sum of the first 16 terms of an AP whose first term and third term are 5 and 15 respectively is
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2
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For an A.P. if a25  a20 = 45, then d equals to:
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3
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If the first term of an A.P. is 2 and common difference is 4, then the sum of its 40 term is
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4
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The 7th and 21st terms of an AP are 6 and 22 respectively. Find the 26th term
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5
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What is the sum of the first 12 terms of an arithmetic progression if the first term is 19 and last term is 36?
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6
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The 2^{nd} and 6^{th} term of an arithmetic progression are 8 and 20 respectively. What is the 20^{th} term?
Solution 
7
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Find the first term of an AP whose 8th and 12th terms are respectively 39 and 59.
Solution 
8
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What is the sum of the first 12 terms of an arithmetic progression if the first term is 19 and last term is 36?
Solution 
9
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(1) + (1 + 1) + (1 + 1 + 1) + ....... + (1 + 1 + 1 + ...... n  1 times) = ......
Solution 
10
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The common difference of the A.P. \(\frac{1}{3}, \frac{{1  3b}}{3} , \frac{{1  6b}}{3}\) . . . . . . is
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