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If four numbers in A.P. are such that...

If four numbers in A.P. are such that their sum is 50 and the greatest number is 4 times the least, then the numbers are (a) 5, 10, 15, 20 (b) 4, 10, 16, 22 (c) 3, 7, 11, 15 (d) none of these

A

5, 10, 15, 20

B

4, 10, 16, 22

C

3, 7, 11, 15

D

None of these.

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A
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CBSE COMPLEMENTARY MATERIAL-SEQUENCES AND SERIES -SECTION-A(MCQ)
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  6. What is the 15^(th) term of the series 3, 7, 13, 21, 31, 43, …….?

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  7. If a ,b ,a n dc are in G.P. then prove that 1/(a^2-b^2)+1/(b^2)=1/(b^2...

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  13. If four numbers in A.P. are such that their sum is 50 and the great...

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  14. If the first second and last terms of an A.P. are a, b and 2a respecti...

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  15. If pth, qth, rth terms of an A.P. are in G.P. then common ratio of ths...

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  16. The n^(th) term of a GP is 128 and the sum of its n terms is 255. If i...

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  17. If A be one A.M. and p ,q be two G.M. ' s between two numbers, then 2A...

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