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

L.C.M. (a + b)9 and (a + b)13 is

  1. (a + b)4

  2. (a + b)22

  3. (a + b)9

  4. ( a + b)13
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

LCM is highest power of all the factors There is only 1 factor (a+b) with its highest power  13 

Multiple choice

(78 x 88) + (10 x 95) equals

  1. 6864

  2. 7841

  3. 7814

  4. 7811

  5. 7844
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

It is the correct option. (78 x 88) + (10 x 95) = 7814 So, option (3) is correct.

Multiple choice

11 ^ 5 What is the output of the above operation?

  1. 1

  2. 6

  3. 8

  4. 14

  5. 15
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The ^ operator is bitwise XOR in C. 11 in binary is 1011, 5 is 0101. XOR compares each bit position: 1^0=1, 0^1=1, 1^0=1, 1^1=0. Result: 1110 which is 14 in decimal. XOR gives 1 only when bits differ.

Multiple choice

Twice the complement of 45 degrees is

  1. 45 degrees

  2. 90 degrees

  3. 105 degrees

  4. 30 degrees

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

It is twice the complement of 45 degrees. Therefore, it is the correct answer.