{array}{cc} {Column A} & {Column B} \\ (3^{-1} + 4^{-1} + 5^{-1})^0 & 1 {array}

Correct Answer is : if the two quantities are equal;

if the quantity in Column A is greater;

if the quantity in Column B is greater;

if the two quantities are equal;

if the relationship cannot be determined from the information given.

Correct Answer is : if the two quantities are equal;

Test Index

Quantitative Comparison Practice Test 3

Question : 10 of 50

Marks: +1, -0

\begin{array}{cc} \text{Column A} & \text{Column B} \\ (3^{-1} + 4^{-1} + 5^{-1})^0 & 1 \end{array}

Solution:

Concept:

For any non-zero number

a

, we have

a^0=1

Explanation:

Column A is

(3^{-1}+4^{-1}+5^{-1})^0

The base is

3^{-1}+4^{-1}+5^{-1}=\frac{1}{3}+\frac{1}{4}+\frac{1}{5}

, which is positive and non-zero.

So, raising this non-zero base to the power

0

gives

1

Thus, Column A

=1

Column B is given as

1

Therefore, both columns are equal.

Answer:

Option C: the two quantities are equal.

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