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 maths ways to multiply and divide mental multiplication multiplication methods multiplication of numbers

If $4\times 5=1625$, $3\times 8=964$, $4\times 6=436$ then $1\times 9=?$

  1. $36$
  2. $150$
  3. $181$
  4. $218$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
If you see the given equation carefully then you may realize that $1625$ come because of $ { 4 }^{ 2 } $ and $ { 5 }^{ 2 } $
So by this logic we can write 
$ 1\times 9={ 1 }^{ 2 }{ 9 }^{ 2 }=181 $
So option $ C $ is correct.
Multiple choice

Three plus four equals...

  1. seven

  2. eight

  3. nine

  4. ten
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Basic arithmetic shows that 3 plus 4 equals 7. Seven is the correct sum.

Multiple choice

What is the value of "1" + "3" + 2?

  1. 15

  2. 132

  3. 42

  4. 6
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In Java, the '+' operator performs string concatenation when at least one operand is a String. Evaluating from left to right, "1" + "3" results in "13", and then "13" + 2 results in "132".

Multiple choice

What is III + XV?

  1. 16

  2. 18

  3. 15

  4. 19
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

First, convert the Roman numerals to Arabic numerals: III equals 3, and XV equals 15. Adding these values together gives 3 + 15 = 18.

Multiple choice

The value of CDIX is?

  1. 49

  2. 99

  3. 499

  4. 409
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

CDIX consists of CD, which represents 400 (500 minus 100), and IX, which represents 9 (10 minus 1). Adding these together gives 400 + 9 = 409.

Multiple choice

The value of XCIX is?

  1. 99

  2. 49

  3. 44

  4. 909
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

XCIX is composed of XC (which is 10 before 100, or 90) and IX (which is 1 before 10, or 9). Adding these together gives 90 + 9 = 99.

Multiple choice

What does M+L equal?

  1. 70

  2. 120

  3. 1050

  4. 400
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In Roman numerals, M stands for 1000 and L stands for 50. Adding these two values together gives 1050.

Multiple choice

26 can be written as:

  1. 2 x 6

  2. 6 x 2

  3. 2 x 2 x 2 x 2 x 2 x 2

  4. 2 x 2 x 2 x 2 x 2 x 6
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An exponent indicates how many times the base is multiplied by itself. 2^6 means 2 is multiplied by itself 6 times.