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

Correct Answer:
D) Neither I nor II

Description for Correct answer:

\( \Large  \sqrt{2}, \sqrt[3]{3}, \sqrt[6]{6} \)

Taking LCM of 2, 3 and 6 = 12

Now, \(  \Large \sqrt{2} = \left(2\right)^{\frac{1}{2}} = \left(2\right)^{\frac{6}{12}} = \sqrt[12]{2^{6}} = \sqrt[12]{64} \)

\( \Large  \sqrt[3]{3} = \left(3\right)^{\frac{1}{3}} = \left(3\right)^{\frac{4}{12}} = \sqrt[12]{3^{4}} = \sqrt[12]{81} \)

\( \Large  \sqrt[6]{6} = \left(6\right)^{\frac{1}{6}} = \left(6\right)^{\frac{2}{12}} = \sqrt[12]{6^{2}} = \sqrt[12]{36} \)

So, neither I nor II are correct.


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








Comments

No comments available




Similar Questions
1). 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). \( \Large \sqrt{3} \)
-- View Answer
2). Simplify \( \Large \sqrt[6]{ \left(27\right)^{-\frac{2}{3}} } + \left(8\right)^{-\frac{2}{3}} \)
A). \( \Large \sqrt[6]{35} \)
B). \( \Large \frac{6}{\sqrt{13}} \)
C). \( \Large \sqrt{13} \)
D). \( \Large \sqrt[6]{6} \)
-- View Answer
3). If \( \Large 2x^{\frac{1}{3}} + 2x^{-\frac{1}{3}} = 5 \), then \( \Large x^{\frac{1}{3}} \) is equal to
A). 1 or -1
B). 2 or \( \Large \frac{1}{2} \)
C). 8 or \( \Large \frac{1}{8} \)
D). 3 or \( \Large \frac{1}{3} \)
-- View Answer
4). If \( \Large log3 \times log4\ x > 0 \), then 
A). \( \Large x > 1 \)
B). \( \Large x > 4 \)
C). \( \Large x > 64 \)
D). none of these
-- View Answer
5). \( \Large log \frac{1}{4} \left(a^{2}-1\right) < log_\frac{1}{2} \left(a+1\right)^{2}\)
A). \( \Large a<1 \)
B). \( \Large a<-1 \)
C). \( \Large a>1 \)
D). none of these
-- View Answer


6). If \( \Large log_{e} \left(\frac{a+b}{2}\right) = \frac{1}{2} \left(log_{e} a+log_{e} b\right) \) then:
A). a = b
B). a = b/2
C). 2a = b
D). \( \Large a = \frac{b}{3} \)
-- View Answer
7). If \( \Large 2 log \left(x+1\right)-10g \left(x^{2}-1\right) = log^{2} \), then x equals
A). 1
B). 0
C). 2
D). 3
-- View Answer
8). The number \( \Large log 2^{7} \) is:
A). an integer
B). a rational number
C). an irrational number
D). a prime number
-- View Answer
9). If \( \Large y = 2^{\frac{1}{logx}\left(8\right)} \), then x is equal to:
A). y
B). \( \Large y^{2} \)
C). \( \Large y^{3} \)
D). none of these
-- View Answer
10). If \( \Large log_{05} \sin x = 1 - log_{05} \cos x \), then number of solution of \( \Large x ? \left[ -2 \pi , 2 \pi \right] \) is:
A). 1
B). 2
C). 3
D). 4
-- View Answer