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General Ability Test - 7

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General Ability Test - 7
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Weekly Quiz Competition
  • Question 1
    3 / -1

    Look at this series: 80, 10, 70, 15, 60, ... What number should come next?

    Solution

    This is an alternating addition and subtraction series. In the first pattern, 10 is subtracted from each number to arrive at the next. In the second, 5 is added to each number to arrive at the next.

    Hence option A is the correct answer.

  • Question 2
    3 / -1

    Look at this series: 0.15, 0.3, ____, 1.2, 2.4, ... What number should fill the blank?

    Solution

    This is a simple multiplication series. Each number is 2 times greater than the previous number.

    Hence option C is the correct answer.

  • Question 3
    3 / -1

    Look at this series: 2, 6, 18, 54, ... What number should come next?

    Solution

    This is a simple multiplication series. Each number is 3 times more than the previous number.

    Hence option C is the correct answer.

  • Question 4
    3 / -1

    On selling 17 balls at Rs. 720, there is a loss equal to the cost price of 5 balls. The cost price of a ball is:

    Solution

    (C.P. of 17 balls) - (S.P. of 17 balls) = (C.P. of 5 balls)

    ⇒ C.P. of 12 balls = S.P. of 17 balls = Rs.720.

    ⇒ C.P. of 1 ball = Rs. (720/12) = Rs. 60.

    Hence option D is the correct answer.

  • Question 5
    3 / -1

    Look at this series: 4, 7, 25, 10, __, 20, 16, 19, ... What number should fill the blank?

    Solution

    Two series alternate here, with every third number following a different pattern. In the main series, 3 is added to each number to arrive at the next. In the alternating series, 5 is subtracted from each number to arrive at the next.

    Hence option A is the correct answer.

  • Question 6
    3 / -1

    A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is :

    Solution
    A's 1 day's work \(=\frac{1}{15}\) \(B\) 's 1 day's work \(=\frac{1}{20}\) \((A+B)^{\prime}\) 's 1 day's work \(=\left(\frac{1}{15}+\frac{1}{20}\right)=\frac{7}{60}\)
    \((A+B)^{\prime} s 4\) day's work \(=\left(\frac{7}{60} \times 4\right)=\frac{7}{15}\)
    Therefore, Remaining work \(=\left(1-\frac{7}{15}\right)=\frac{8}{15}\)
    Hence option D is the correct answer.
  • Question 7
    3 / -1

    Look at this series: 201, 202, 204, 207, ... What number should come next?

    Solution

    In this addition series, 1 is added to the first number; 2 is added to the second number; 3 is added to the third number; 4 is added to the fourth number; and go on.

    Hence option D is the correct answer.

  • Question 8
    3 / -1

    A began a business with Rs. 85000. He was joined afterwards by B with Rs. 42500. For how much period does B join if the profit at the year is divided in the ratio of 3:1?

    Solution

    Let B join for x months.

    Each person gets profit according to his/her investment and amount of time.

    P = total profit

    = 42500 × x = 85000 × 4

    = x = 2 × 4 = 8 months

    Hence option D is the correct answer.

  • Question 9
    3 / -1

    In covering a distance of 30 km, Abhay takes 2 hours more than Sameer. If Abhay doubles his speed, then he would take 1 hour less than Sameer. Abhay's speed is:

    Solution

    Let Abhay's speed be x km/hr.

    = 6x = 30

    = x = 5km/hr.

  • Question 10
    3 / -1

    A sum of money amounts to Rs. 9800 after 5 years and Rs. 12005 after 8 years at the same rate of simple interest. The rate of interest per annum is:

    Solution

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