Numerical Ability


  1. A wire would enclose an area of 1936 m2, if it is bent into a square. The wire is cut into two pieces. The longer piece is thrice as long as the shorter piece. The long and the short pieces are bent into a square and a circle, respectively. Which of the following choices is closest to the sum of the areas enclosed by the two pieces in square meters?









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    Side of the square = 44 m
    Long piece = 44 × 3 = 132 m and short piece = 44 m
    Hence, equating these values with the perimeter of square and circle respectively we will get the required answer as 1243 m2.

    Correct Option: C

    Side of the square = 44 m
    Long piece = 44 × 3 = 132 m and short piece = 44 m
    Hence, equating these values with the perimeter of square and circle respectively we will get the required answer as 1243 m2.


  1. Forty students watched films, A, B and C over a week. Each student watched either only one film or all three. Thirteen students watched film A, sixteen students watched film B and nineteen students watched film C. How many students watched all three films?









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    13 + 16 + 19 = 48 > 40
    Hence, 4 students would have watched all three due to which there is a double counting of 4 × 2 = 8.

    Correct Option: C

    13 + 16 + 19 = 48 > 40
    Hence, 4 students would have watched all three due to which there is a double counting of 4 × 2 = 8.


  1. A contract is to be completed in 52 days and 125 identical robots were employed, each operational for 7 hours a day. After 39 days, five-seventh of the work was completed. How many additional robots would be required to complete the work on time, if each robot is now operational for 8 hours a day?









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    125 × 7 × 39 = 5x/7
    ∴ x or total work = 25 × 39 × 49
    Hence, [125 + y(additional robot)] × 8 × 13 = 25 × 39 × 49 × 2/7
    Thus, the given data is insufficient to answer the question.

    Correct Option: D

    125 × 7 × 39 = 5x/7
    ∴ x or total work = 25 × 39 × 49
    Hence, [125 + y(additional robot)] × 8 × 13 = 25 × 39 × 49 × 2/7
    Thus, the given data is insufficient to answer the question.


  1. An unbiased coin is tossed six times in a row and four different such trials are conducted. One trial implies six tosses of the coin. If H stands for head and T stands for tail, the foilowing are the observations from the four trials:
    (1) HTHTHT
    (2) TTHHHT
    (3) HTTHHT
    (4) HHHT ________.
    Which statement describing the last two coin tosses of the fourth trial has the highest probability of being correct?









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    NA

    Correct Option: B

    NA


  1. The value of the expression
    1
    +
    1
    +
    1
    is -
    1 + loguVW1 + logvWU1 + logwUV









  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: C

    NA