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Section 4 : Mathematical Reasoning

Part I : Quantitative Comparison Questions

  1. S = { (H, H, H) (H, T, H) (H, H, T), (T, H, H)

        (T, T, T) (T, H, T) (T, T, H) (H, T, T) }.

        S = sample space when a coin is tossed 3 times.

        The chances of getting 3 tails = 1

        The chances of getting two heads = 3

        1 < 3

    Ans : B

  2.          x2- 21x + 98 = 0

    x2 - 14x - 7x + 98 = 0

            (x-14) ( x-7) = 6

              x = 14 or x = 7

        Since x takes two values, the relationship cannot be
        determined.

    Ans : D

  3.      

    Ans : A

  4. Consider m = - 2, n = - 1 (m < n < 0)

        L. H. S.        = m3 - n R.H.S. = n3 - m

        = - 8 + 1           = -1 + 2

        = - 7                 = 1

        \ R.H.S. > L.H.S

    Ans : B

  5. The greatest possible value of 9 - x2 will be 9 only
    if x2 = 0

    \ If x = 0

    9 - x2 = 9

    9 > 0

    RHS > LHS

    Ans : B

  6. Let the price of a watch be 'a' dollars.

    Discounted price = Original price  =
    (% discount) . (original price)

    25% = a - .25a

    = .75a

    Net price after successive discounts of 15% and 10%

    Ans : B

  7. 6 > 5 sides, which is the number of sides in a polygon.

    Ans : A

  8. a + b + c = 180

        a + 3a + 5a = 180

    a = 20

    b = 60

    60 > 50

    Ans : A

Index

Test 3

Section 1: Verbal Reasoning
Section 2: Mathematical Reasoning
Section 3: Verbal Reasoning
Section 4: Mathematical Reasoning
Section 5: Reading Comprehension
Section 6: Mathematical Reasoning
Section 7: Mathematical Reasoning
Answer Key To Test 3

Answer Explanation To Test 3
Section 1: Verbal Reasoning
Section 2: Mathematical Reasoning
Section 3: Verbal Reasoning
Section 4: Mathematical Reasoning
Section 5: Reading Comprehension
Section 6: Mathematical Reasoning
Section 7: Mathematical Reasoning

Test 4

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