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Sum of three consecutive terms in a G.P....

Sum of three consecutive terms in a G.P. is 42 their product is 512 . Find the largest of these numbers. :

A

28

B

16

C

32

D

none of these

Text Solution

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The correct Answer is:
C
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QUANTUM CAT-SEQUENCE, SERIES & PROGRESSIONS-QUESTION BANK
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  11. There are four numbers such that the first three of them form an Arith...

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  12. Find the sum of n terms of the series 1+3 +7 +15 + …

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  13. Find the sum to n terms :1/2+3/2^2+5/2^3+...+(2n-1)/2^n

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  14. Find the sum to n terms of the series 11+ 102+1003+10004+… :

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  15. Find the sum of first n groups of (1) + (1+3) +(1+3+9) + (1+3+9 +27) +...

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  16. Find the sum to n terms of the following series : 2+5+14+41 + …

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  17. Find the sum to n terms : 1+ 2x + 3x^2 + 4x^3 + … ,xne 1 :

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  18. Find the sum to infinity of the series 1+3x+5x^2+7x^3+oow h e n|x|<1.

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  20. Find the sum to n terms of 3 * 2 + 5*2^2 + 7*2^3 + ….

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