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Divyasharks
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Divyasharks
Fifty numbers are arranged in descending order. The last number is 1. The ratio of any number and its preceding number is 1: 3. The 45th number is

A. 3^3
B. 3^4
C. 3^5
D. 3^44
E. 3^45

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Yeah I guess the option should be C, Just count from backward
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Thanks alot I understood what i was missing

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Braintree
If I'm not mistaken, the OA should be changed to "C".
Thanks a lot i am trying to change it

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Let the first digit be X

Since ratio between two numbers is 3:1, common ratio will be 1/3

50th term

1 = x(1/3)^49

x = 3^49

Therefore 45th term

= 3^49(1/3)^44

= 3^49 X 3^-44

= 3^5

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