The twelfth term of an A.P. is (-13) and...

The twelfth term of an A.P. is (-13) and the sum of its first four terms is 24, find the sum of first 10 terms of the A.P.

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CHHAYA PUBLICATION-SEQUENCE AND SERIES-Exercise 9 B (Very Short Answer Type Questions)

The 10th term of an A.P. is (-15) and the 31st term is (-57). Find the...
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Which term of the A.P. {7, 11, 15, 19,….} is 111 ?
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Fill up the gaps (indicated by ) in each of the following A.P.'s. 1,...
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Fill up the gaps (indicated by ) in each of the following A.P.'s. ,...
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The nth term of an arithmetic progression is 3n-1. Find the progressio...
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Find the middle term (or terms) and the sum of each of the following s...
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Find the middle term (or terms) and the sum of each of the following s...
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Find the middle term (or terms) and the sum of each of the following s...
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The twelfth term of an A.P. is (-13) and the sum of its first four ter...
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The 5th and 11th terms of an A.P. are 41 and 20 respectively. What is ...
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The sum to n terms of an A.P. is n^(2). Find the common difference.
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Show that the sum of n terms of the series {4+12+20+28+…} is the squar...
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Prove that when 1 is added to the sum of n terms of the series {8+16+2...
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Find the sum of the series 1+3+4+8+7+13+10+18+… to 23 terms.
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