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 general knowledge

6 9 + + 9 6 X X 6 9 + + 9 6 X X 6 9 + + ? 6 X ?

  1. 9 6
    • 6

  3. 9 X

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

The pattern 6 9 + + 9 6 X X 6 9 + + 9 6 X X 6 9 + + ? 6 X ? shows a repeating structure: 6 9 + + 9 6 X X appears twice, then 6 9 + +, then ? 6 X ?. The missing elements 9 X would complete the pattern, making it 6 9 + + 9 6 X X to maintain the established structure.

Multiple choice general knowledge math & puzzles

Find the Odd One Out:- 3,8,15,24,34,48,63

  1. 48

  2. 34

  3. 24

  4. 63
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The sequence follows the pattern n² - 1 where n starts from 2: 2²-1=3, 3²-1=8, 4²-1=15, 5²-1=24, 6²-1=35, 7²-1=48, 8²-1=63. The number 34 is incorrect because 6²-1 should be 35, not 34. This breaks the mathematical pattern that all other numbers follow perfectly.

Multiple choice general knowledge math & puzzles

you can devide 27 by 3..........

  1. 1 times

  2. 2 times

  3. 3 times

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

This is a classic riddle. You can only divide 27 by 3 'one time' because after you subtract 3 from 27, you are then dividing/subtracting from 24, not 27. Mathematically, $27/3 = 9$, but the riddle logic focuses on the initial act of division.

Multiple choice general knowledge math & puzzles

Find a number whose double exceeds its quarter by 7.

  1. 5

  2. 4

  3. 3

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

To solve this question, the user needs to know basic algebraic equations and the concept of solving for a variable.

Let's represent the number in question as "x".

From the problem, we know that:

2x = (1/4)x + 7

To solve for "x", we can start by simplifying the equation.

First, we can multiply both sides of the equation by 4 to eliminate the fraction:

8x = x + 28

Next, we can subtract "x" from both sides to isolate the variable on one side of the equation:

7x = 28

Finally, we can solve for "x" by dividing both sides by 7:

x = 4

Therefore, the correct answer is:

The Answer is: B (4)

Multiple choice general knowledge

In C, sizeof(long double) = ?

  1. 8

  2. 12

  3. 2

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

In C programming on most modern systems (particularly x86-64 with GCC), long double is 12 bytes or 96 bits, using extended precision. This is larger than double (8 bytes) and much larger than float (4 bytes). However, this is implementation-dependent.

Multiple choice general knowledge

If you multiply _____ by ______ you get 12,345,678,987,654,321

  1. 111,111,111 by 111,111,111

  2. 111,111,111 by 222,222,222

  3. 222,222,222 by 222,222,222

  4. 111,111,111 by 999,999,999
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

111,111,111 x 111,111,111 = 12,345,678,987,654,321. This is a well-known mathematical pattern where multiplying a number consisting of all 1s by itself creates a palindromic result. The other options (multiplying by 222,222,222 or 999,999,999) would not produce this specific palindromic number.