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What is the least integer value of x for

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What is the least integer value of x for [#permalink] New post 13 Oct 2017, 01:55
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What is the least integer value of x for which 1 - (\frac{1}{4})^x is greater than zero ?

A. -2

B. -1

C. 0

D. 1

E. 2
[Reveal] Spoiler: OA

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Re: What is the least integer value of x for [#permalink] New post 13 Oct 2017, 05:06
Instead of solving the equation, Just put the values and check.

Answer is C (Zero)
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Re: What is the least integer value of x for [#permalink] New post 15 Oct 2017, 02:24
Rajneesh Garg wrote:
Instead of solving the equation, Just put the values and check.

Answer is C (Zero)


The question asks how to get the expression greater than zero. Thus, 1/4 to the power of 0 becomes 1 and 1-1 = 0 that is not greater than zero.

The answer is D. Because 1/4 to the power of 1 is still 1/4 and 1-1/4 is 3/4 that is larger than zero.
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Re: What is the least integer value of x for [#permalink] New post 15 Oct 2017, 06:50
Rajneesh Garg wrote:
Instead of solving the equation, Just put the values and check.

Answer is C (Zero)



You can check the official answer under the

[Reveal] Spoiler: OA . Just click the [Reveal] and you will find the Official answer.
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Re: What is the least integer value of x for   [#permalink] 15 Oct 2017, 06:50
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