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Wrong Answers: | |

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### Question 1

What is x in $0.41/x = 4.1$?

### Question 2

What is ${48 × 6.7 - 67 × 8.5}/7.3$?

**A**

$-33{70/73}$.

**B**

$+33{70/73}$.

**C**

$-33{23/73}$.

**D**

$+33{23/73}$.

**Soln.**

**Ans: a**

Observe that all fractional numbers are having one digit to the right of the dot. So we can cancel all the dots and get a plain expression: ${48 × 67 - 67 × 85}/73$ which equals ${-2479/73}$, which is same as: $-33{70/73}$

### Question 3

Which is the smallest?

**A**

$0.077^3$.

**B**

$1/0.077$.

**C**

$0.077$.

**D**

$0.077^2$.

**Soln.**

**Ans: a**

We know that if a number is less than 1, then it becomes smaller and smaller as it is raised to higher and higher positive powers. Now, $1/0.077$ is same as $0.077^{-1}$. The three powers of 0.077 given to us are -1, 1, 2 and 3. Out of these 3 is the most positive, so, $0.077^3$ is the smallest.

### Question 4

What is ${2.44^2 - 1.86^2}/{2.44 - 1.86}$?

### Question 5

What is z in $9.477 + 0.2 - z = 0.02$?

### More Chapters | See All...

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This Blog Post/Article "Decimal Numbers Quiz Set 003" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Updated on 2020-02-07. Published on: 2016-04-21