Basic Arithmetic
55 questions available
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Q1.Which of the following is not a rational?
Correct Answer: B
√2 is an irrational number since it cannot be expressed as a simple fraction.
Q2.The Cube roof of 2744 is:
Correct Answer: D
The cube root of 2744 is 14, since 14³ = 2744.
Q3.What is the sum of prime numbers less than 21?
Correct Answer: C
Prime numbers less than 21: 2,3,5,7,11,13,17,19. Their sum = 77.
Q4.Arrange in order of size, smallest to largest: (i) 0.5^2 (ii) 0.5 (iii) 0.5^3 (iv) cube root of 0.5
Correct Answer: B
0.5^3 = 0.125, 0.5^2 = 0.25, 0.5 = 0.5, cube root of 0.5 ≈ 0.79. Order smallest to largest: iii, i, ii, iv.
Q5.What is 24 ÷ 4?
Correct Answer: A
24 divided by 4 equals 6.
Q6.What is 35 ÷ 5?
Correct Answer: A
35 divided by 5 equals 7.
Q7.What is 48 ÷ 6?
Correct Answer: A
48 divided by 6 equals 8.
Q8.What is 63 ÷ 7?
Correct Answer: A
63 divided by 7 equals 9.
Q9.What is 80 ÷ 8?
Correct Answer: A
80 divided by 8 equals 10.
Q10.What is 99 ÷ 9?
Correct Answer: A
99 divided by 9 equals 11.
Q11.What is 120 ÷ 10?
Correct Answer: A
120 divided by 10 equals 12.
Q12.What is 143 ÷ 11?
Correct Answer: A
143 divided by 11 equals 13.
Q13.What is 168 ÷ 12?
Correct Answer: A
168 divided by 12 equals 14.
Q14.What is 195 ÷ 13?
Correct Answer: A
195 divided by 13 equals 15.
Q15.Arrange in order of size, smallest to largest: (i) 0.5^2 (ii) 0.5 (iii) 0.5^3 (iv) cuberoot(0.5)
Correct Answer: B
Correct answer is B: iii, i, ii, iv
Q16.How many combinations of two-digit numbers having 6 can be formed from the following numbers: 6, 7, 5, 1, 3, 8?
Correct Answer: A
Correct Answer: 6.
Q17.Find the number which does not fit in the series: 10, 25, 45, 54, 60, 75, 85
Correct Answer: B
Correct Answer: 54.
Q18.A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number?
Correct Answer: C
Correct Answer: 8.
Q19.The number 8 is to 44 as 5 is to:
Correct Answer: D
Correct Answer: None of these.
Q20.The difference of two integers is 36. The smaller integer is 60% smaller than the larger integer. What is the sum of the two?
Correct Answer: D
Correct Answer: None of these.