Correct Answers: | |
Wrong Answers: | |
Unattempted: |
Question 1
One-third of the cube-root of which number is 0.6?
Question 2
What is cube root of 0.000008?
Question 3
If $2√3 + √27 = 8.66$, then what is the value of $√27 + 4√3$?
12.12.
12.24.
12.00.
12.36.
Ans: a
The given expression can be rearranged like this: $2√3 + √{3^{2} × 3}$, which is same as $2√3 + 3√3$ which is same as $5√3 = 8.66$, from which we get $√3 = 1.73$. Next we can see that $√27 + 4√3$ is same as $√{3^{2} × 3} + 4√3$, which is same as $7√3$, which gives $7 × 1.73$ = 12.12.
Question 4
What is the value of ${√17}/6$ − $5/{√17}$?
${-13√17}/102$.
${+13√17}/102$.
${-5√17}/102$.
${+5√17}/102$.
Ans: a
The given expression can be simplified to ${{(√17)^2} - 6 × 5}/{6 × √17}$, which is same as ${17 - 30}/{6 × √17}$, which is same as ${-13/{6 × √17}$. Rationalizing, we get ${-13/{6 × √17} × {√17/√17}$ which gives ${-13√17}/102$
Question 5
If $4√5 + √80 = 17.89$, then what is the value of $√125 + 6√5$?
24.60.
12.25.
25.
12.96.
Ans: a
The given expression can be rearranged like this: $4√5 + √{4^{2} × 5}$, which is same as $4√5 + 4√5$ which is same as $8√5 = 17.89$, from which we get $√5 = 2.24$. Next we can see that $√125 + 6√5$ is same as $√{5^{2} × 5} + 6√5$, which is same as $11√5$, which gives $11 × 2.24$ = 24.60.
More Chapters | See All...
Probability | Alligations and Mixtures | Ranking Test | Clocks and Calendars | abba Series | Areas | Missing Numbers | Simple Interest | Bricks and Blocks | Problems on Numbers | More...
This Blog Post/Article "Square and Cube Roots Quiz Set 001" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Updated on 2020-02-07. Published on: 2016-04-20