Mathematics · Quantitative Aptitude

Number Operations and Properties

896 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

Which number is smaller, 1/2 or 2/3?

  1. 1/2

  2. 2/3

  3. Both are equal
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

1/2 is smaller than 2/3.

Multiple choice

What is the value of 5 x 3?

  1. 10

  2. 12

  3. 15

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

5 x 3 = 15.

Multiple choice

I am a number that is the product of two consecutive even numbers. What am I?

  1. 16

  2. 20

  3. 24

  4. 28
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The only pair of consecutive even numbers that multiply to 20 is 4 and 5.

Multiple choice

I am a number that is the quotient of two consecutive even numbers. What am I?

  1. 1/2

  2. 1

  3. 3/2

  4. 2
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The only pair of consecutive even numbers that divide evenly is 2 and 4.

Multiple choice

I am a number that is the product of the first three consecutive even numbers. What am I?

  1. 24

  2. 36

  3. 48

  4. 60
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The first three consecutive even numbers are 2, 4, and 6, which multiply to 24.

Multiple choice

I am a number that is the product of the first four consecutive even numbers. What am I?

  1. 384

  2. 512

  3. 640

  4. 768
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The first four consecutive even numbers are 2, 4, 6, and 8, which multiply to 384.

Multiple choice

What is the Ramsey number (R(4,4))?

  1. 18

  2. 19

  3. 20

  4. 21
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Ramsey number (R(4,4)) is the smallest number of vertices in a graph such that any two disjoint sets of four vertices are either all connected by edges or all disconnected by edges.

Multiple choice

What are some of the applications of the decimal system?

  1. Currency

  2. Measurement

  3. Science

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The decimal system is used in currency, measurement, science, and many other applications.

Multiple choice

Which of the following is a mathematical operation that combines two or more numbers to produce a single number?

  1. Addition

  2. Subtraction

  3. Multiplication

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

Addition is a mathematical operation that combines two or more numbers to produce a single number.

Multiple choice

Which of the following is a mathematical operation that combines two or more numbers to produce a single number?

  1. Addition

  2. Subtraction

  3. Multiplication

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

Multiplication is a mathematical operation that combines two or more numbers to produce a single number.

Multiple choice

Calculate the value of 144^2 using the Urdhva Tiryakbhyam Sutra.

  1. 20736

  2. 21736

  3. 22736

  4. 23736
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Using the Urdhva Tiryakbhyam Sutra, we can multiply the digits of 144 in a vertical and horizontal manner. The result is 20736.

Multiple choice

Solve the following addition problem: 345 + 234 = ?

  1. 579

  2. 589

  3. 679

  4. 789
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

To solve this addition problem, we add the digits in each column, starting from the rightmost column. 5 + 4 = 9, 3 + 3 = 6, and 2 + 2 = 4. Therefore, the sum of 345 and 234 is 579.

Multiple choice

Divide 456 by 12.

  1. 38

  2. 39

  3. 40

  4. 41
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

To divide two numbers, we repeatedly subtract the divisor from the dividend until the remainder is less than the divisor. In this case, we have 456 ÷ 12 = 38 with a remainder of 0.

Multiple choice

What is the factorial of 5?

  1. 120

  2. 24

  3. 60

  4. 15
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The factorial of a number is the product of all positive integers up to that number. Therefore, 5! = 5 * 4 * 3 * 2 * 1 = 120.

Multiple choice

What is 5 + 3?

  1. 6

  2. 7

  3. 8

  4. 9
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

5 + 3 = 8.