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Arithmetic MCQs | Basic Mathematics Test Questions with Solutions

  • What is sum of the first 12 numbers of the series: 2 , 6, 10, 14, …?

    (A) 260
    (B) 268
    (C) 280
    (D) 288

    The answer is: (D) 288
    Solution
    This is an arithmetic sequence with common difference of 4. The first element is 2, and total elements are 12. So, a1=2, d=4 and n=12. So, by using the formula of nth term of an arithmetic sequence, first we will find the 12th term

  • What is inverse of the function f(x)=2x-3?

    (A) 3-2x
    (B) 1-2x
    (C) 2x-1
    (D) (x+3)/2

    The answer is: (D) (x+3)/2
    Solution

  • What is |2|-|-2|-22-(-2)2=?

    Q. What is: |2| – |–2| – 22 – (–2)2 = ?
    (A) –8
    (B) –6
    (C) –4
    (D) –2

    The answer is: (A) –8
    Solution

  • What is the sum of the sequence: 2+4+6+…+98+100=?

    (A) 2450
    (B) 2500
    (C) 2550
    (D) 2600

    The answer is: (C) 2550
    Solution
    This is an arithmetic sequence with common difference of 2. The first element is 2, the last element is 100, and total elements (from 2 to 100) are 50. So, a1 = 2, an = 100, d = 2 and n = 50. So, by using the formula for the sum of n elements of an arithmetic sequence, we have

  • What is the sum of the numbers: 1, 2, 3, 4, …, 99, 100?

    (A) 5000
    (B) 5050
    (C) 5100
    (D) 5150

    The answer is: (B) 5050
    Solution
    These are the first 100 natural numbers (n=100). So, by applying formula for the sum of the first n natural numbers, we have

  • In a class of 60 students the ratio of boys to girls is 3:2. How many girls are there in the class?

    (A) 21
    (B) 22
    (C) 23
    (D) 24

    The answer is: (D) 24
    Solution

  • What is the volume of a right-circular cylinder in cm3 having radius 2cm and height 7cm?

    Q. What is the volume of a right-circular cylinder in cm3 having radius 2cm and height 7cm?
    (A) 86 cm3
    (B) 88 cm3
    (C) 90 cm3
    (D) 92 cm3

    The answer is: (B) 88 cm3
    Solution
    Here, r=2 and h=7. Hence, by using formula for finding volume of a right-circular cylinder, we have

  • What is the average of the numbers: 2, 5, 0, 10, 10, 12, 8 and 9?

    (A) 6
    (B) 7
    (C) 8
    (D) 9

    The answer is: (B) 7
    Solution

  • If 75 percent of a number is y. And, 80 percent of y is 60, then what is the number?

    (A) 100
    (B) 110
    (C) 120
    (D) 130

    The answer is: (A) 100
    Solution

  • The cost of an article is Rs.160. What should be the selling price in rupees to obtain a profit of 15 percent?

    (A) 180
    (B) 182
    (C) 184
    (D) 186

    The answer is: (C) 184
    Solution
    As we know that, Cost + Profit = Selling Price. Hence,