Decimal Numbers Quiz Set 019 | Maths Aptitude Mock Test on Decimals and Floating Point Numbers Set 19 | mock tests for Bank PO, SSB/SSC Exams, SO Clerical Exam, GATE Exam, LIC AO, GIC AO, etc.

**Your Score**
Correct Answers:
Wrong Answers:
Unattempted:

Question 1

What is x in $0.003/x = 0.01$?

0.3.

0.03.

0.003.

3.0.

Soln.
Ans: a

The expression becomes $x = {3/1000} × {100}$ = 0.3.

Solution | Discuss! | Chapters»

Question 2

What is ${8.00^3 - 0.90^3}/{8.00^2 + 7.200 + 0.90^2}$?

7.10.

6.95.

7.56.

6.56.

Soln.
Ans: a

We know ${a^3 - b^3}/{a^2 + ab + b^2}$ is same as ${(a - b) × (a^2 + ab + b^2)}/{a^2 + ab + b^2}$ which is same as a - b. So we get a - b = 8.00 - 0.90 = 7.10.

Solution | Discuss! | Chapters»

Question 3

What is 0.0029 × 0.94?

$2.726 × 10^{-3}$.

$2.726 × 10^{-4}$.

$2.726 × 10^{-2}$.

$2.726 × 10^{-5}$.

Soln.
Ans: a

Solution | Discuss! | Chapters»

Question 4

For what value of x would this expression be a perfect square: $2.3 × 2.3 - x × 2.3 + 0.9 × 0.9$?

1.8.

2.3.

0.9.

0.23.

Soln.
Ans: a

Comparing the given expression with $a^2 - 2 × a ×b + b^2 = (a - b)^2$, we see that if a = 2.3, and b = 0.9 then by inspection, x should be equal to 2b = 2 × 0.9 = 1.8.

Solution | Discuss! | Chapters»