Topics

General Knowledge
General Science
General English
Aptitude
General Computer Science
General Intellingence and Reasoning
Current Affairs
Exams
Elementary Mathematics
English Literature

If \( \Large \{\left(2^{4}\right)^{\frac{1}{2}} \}^{?} \)= 256, find the value of '?'.

A) 1
B) 2
C) 4
D) 8

Correct Answer:



C) 4

Description for Correct answer:

Given that, \( \Large \left(2^{4 \times \frac{1}{2}}\right)^{?} = 256 \)

=> \( \Large \left(2^{2}\right)^{?} = 2^{8} => 2 \times ? = 8 \)

Therefore, \( \Large ? = \frac{8}{2} = 4 \)

Part of solved Indices and Surd questions and answers : >> Elementary Mathematics >> Indices and Surd

Comments

Similar Questions

1). \( \Large \sqrt[3]{103823} = ? \)

A). 49

B). 51

C). 45

D). 47

2). Find the value of \( \Large \left(10\right)^{200} \div \left(10\right)^{196} \)

A). 10000

B). 1000

C). 100

D). 100000

3). If \( \Large a^{x} = b \), \( \Large b^{y} = c \) and \( \Large xyz = 1 \)then what is the value of \( \Large \left(a^{2} + a^{-2}\right)^{?} \)

A). a

B). b

C). ab

D). a / b

4). If \( \Large a = 2 + \sqrt{3} \), then what is the value of \( \Large a^{2} + a^{-2} \)?

A). 12

B). 14

C). 16

D). 8

5). The expression \( \Large \left[ \left(\sqrt{2}\right)^{\sqrt{2}} \right]^{\sqrt{2}} \)

A). a natural number

B). a integer and not a natural number

C). a rational number but not an integer

D). a real number but not a rational number

6). If \( \Large 16 \times 8^{n+2} = 2^{m} \), then m is equal to

A). n+8

B). 2n+10

C). 3n+2

D). 3n+10

7). If \( \Large \sqrt{10 + \sqrt[3]{x}} = 4 \), then what is the value of x ?

A). 150

B). 216

C). 316

D). 450

8). If m and n are natural numbers, then \( \Large \sqrt[m]{n} \) is

A). always irrational

B). irrational unless n is the mth power of an integer

C). irrational unless m is the nth power of an integer

D). irrational unless m and n are coprime

9). Consider the following in respect of the numbers \( \Large \sqrt{2}, \sqrt[3]{3} \) and \( \Large \sqrt[6]{6} \)
I. \( \Large \sqrt[6]{6} \) is the greatest number.
II. \( \Large \sqrt{2} \) is the smallest number.
Which of the above statements is/are correct?

A). Only I

B). Only II

C). Both I and II

D). Neither I nor II

10). If \( \Large a = \frac{\sqrt{3}}{2} \),then \( \Large \sqrt{1 + a} + \sqrt{1 - a} \) = ?

A). \( \Large \left(2 - \sqrt{3}\right) \)

B). \( \Large \left(2 + \sqrt{3}\right) \)

C). \( \Large \frac{\sqrt{3}}2{} \)

D). \( \Large \sqrt{3} \)