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There are n A.M.s between 3 and 17. The ...

There are `n` A.M.s between 3 and 17. The ratio of the last mean to the first mean is 3:1. Find the value of `ndot`

A

4

B

6

C

8

D

9

Text Solution

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The correct Answer is:
2
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AAKASH INSTITUTE ENGLISH-SEQUENCES AND SERIES -Assignment (SECTION - A) One option is correct
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  2. about to only mathematics

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  3. There are n A.M.s between 3 and 17. The ratio of the last mean to the ...

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  4. n A.M.\'s are inserted between 1 and 31 such that the ratio of the 7th...

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  5. There are four numbers in A. P., the sum of the two extremes is 8, and...

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  6. If the sum of three numbers which are in A.P is 27 and the product of ...

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  7. If n arithmetic means are inserted between 2 and 38, then the sum of t...

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  8. If S(n) denote the sum to n terms of an A.P. whose first term is a ...

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  9. If three positive numbers a, b, c are in A.P. and 1/a^2,1/b^2,1/c^2 a...

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  10. The sum of the series a-(a+d)+(a+2d)-(a+3d)+... up to (2n+1) terms is:...

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  11. about to only mathematics

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  13. If the first, second and last term of an A.P. are a ,\ b and 2a res...

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  14. Sum of first n terms of an A.P. whose last term is l and common dif...

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  15. If one geometric mean G and two arithmetic means A1a n dA2 be inserted...

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  16. The fourth term of the G.P. 4, - 2 , 1 , … is

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  17. Find: n th term of the G.P. sqrt(3),1/(sqrt(3)),1/(3sqrt(3)),

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  18. Which term of the progression 18 ,-12 ,8, i s(512)/(729)?

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  19. The third term of a G.P. is 3. Find the product of its first five term...

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  20. If (a^n+b^n)/(a^(n-1)+b^(n-1))is the A.M. between a and b, then find t...

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