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(3^-1+3^-2)
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23 Mar 2020, 03:31
23 Mar 2020, 03:31
1
Expert Reply
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Question Stats:
78% (00:28) correct
21% (00:57) wrong based on 76 sessions
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Quantity A |
Quantity B |
\((3^{-1}+3^{-2})^{-1}\) |
\(1\) |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Re: (3^-1+3^-2)
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Updated on: 23 Mar 2020, 21:29
Updated on: 23 Mar 2020, 21:29
2
Take 3^-1 common, thus, we get 3^-1(1+3^-1)
on solving this, 1/3(1+1/3). Multiply By 3 to get (1+1/3) and thus, option B becomes 3.
On solving A, we get 4/3 = 1.3, which is less than B, which is 3.
Thus option B should be correct.
on solving this, 1/3(1+1/3). Multiply By 3 to get (1+1/3) and thus, option B becomes 3.
On solving A, we get 4/3 = 1.3, which is less than B, which is 3.
Thus option B should be correct.
