Answer
Step by step text solution for Find the sum to 15 terms of the AP 3,7,11,…… by MATHS experts to help you in doubts & scoring excellent marks in Class 11 exams.
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MAXIMUM PUBLICATION-SEQUENCE AND SERIES-EXAMPLE
- Find the n^th term of the sequence 12,7,2,-3,-8,…..
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- A sequence is given {an} by an=n^2-1, n in N show that it is not an AP...
02:38
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- Find the sum to 15 terms of the AP 3,7,11,……
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- Find the sum to 20 terms of the AP 10,7,4,……
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- Find the sum to 81 terms of the AP-1, 1/4,3/2,……
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- Insert 6 arithmetic means between 3 and 24.
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- If the n^th term of a GP -2,4,-8,,16,…… is 1024. Find n.
02:06
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- If the n^th term of a GP 2,2sqrt2,4,…… is 64. Find n.
02:51
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- Find the sum of first 20 terms of the GP sqrt3,2sqrt3,4sqrt3,8sqrt3,...
01:36
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- In a GP {an}, if a1=3,an=96 and Sn=189. Find common ration and n.
05:19
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- Find the sum to n terms of the question: 9+99+999+…..
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- Find the sum to n terms of the question: 4+44+444+…..
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- The third term of a GP is 4. Find the product of the first five terms.
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- Insert 4 geometric means between 4 and 972.
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- Find the sum to infinity of this geometric progression. 1,1/2,1/2^2,...
01:33
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- Find the sum to infinity of this geometric progression. 5,20/7,80/49...
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- The 10^th term of an AP is 73 and the 20^thterm is 43. Find the 44^th ...
03:11
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- The 7^th term of an AP is 34 and the 15^thterm is 74. Find the 40^th t...
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- Find the sum of 32 terms of an AP whose third term is 1 and the 6^th t...
03:33
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- Find the sum to n terms of a series is 7n^2-5n. Show that it is an AP ...
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