Mathematics · Quantitative Aptitude

Number Operations and Properties

974 Questions

Improve your quantitative aptitude with these number operations and properties questions. The topics range from basic subtraction and division to highest common factor and roman numerals. Regular practice of these fundamentals builds speed for exams.

Basic arithmetic operationsHCF and number propertiesRoman numeral calculationsNumber series evaluation

Number Operations and Properties Questions

Multiple choice

Find the H.C.F. of 36, 24 and 72.

  1. 6

  2. 12

  3. 24

  4. 72
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The prime factorisation of 36 = 22 $\times$ 32 The prime factorisation of 24 = 23 $\times$ 3 The prime factorisation of 72 = 23 $\times$ 32 2 $\times$ 3 = 4 $\times$ 3 = 12

Multiple choice vedic methods of multiplication history of mathematics maths

Half of a number is 12. What is $\dfrac{3}{4}$ of the same number ?

  1. 24

  2. 36

  3. 9

  4. 18
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let the number be $x$.

 

Since,

$ \dfrac{x}{2}=12 $

$ x=24 $

 

Since,

$ \Rightarrow \dfrac{3}{4}\times 24 $

$ \Rightarrow 18 $

 

Hence, this is the answer.

Multiple choice maths numbers in indian and international systems international place value system international system of numeration use of commas and comparison and number systems

Number name for  $123,080,603$ is

  1. One two three eighty thousand six hundred three

  2. One hundred twenty three million. eight thousand six hundred three

  3. One hundred twenty three million eighty thousand six hundred three

  4. One twenty three million eighty thousand six hundred
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

$123,080,603$  - We can write as One hundred twenty three million eighty thousand six hundred three