Mathematical operation and symbol notation

Mathematical operation and symbol notation

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Mathematical operation and symbol notation Tutorial

Verbal Reasoning

Eligibility Test
Logical order of words
Mathematical operation and symbol notation
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Statement and Conclusion
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Situation Reaction Test

Direction: In these question, relationship between different element is shown in the statements. These statements are followed by two conclusions.

  1. Statements:
    N = P, P < F, F > L, L = k
    Conclusions:
    I. F = K II. F > K










  1. View Hint View Answer Discuss in Forum

    N = P ≤ F ≥ L = K
    Hence F ≥ K. Which means either
    I (F = K) or II (F > K) follows

    Correct Option: C

    N = P ≤ F ≥ L = K
    Hence F ≥ K. Which means either
    I (F = K) or II (F > K) follows

  1. If + stands for division; x stands for addition; - stands for multiplication, ÷ stands for subtraction, Which of the following is correct ?








  1. View Hint View Answer Discuss in Forum

    25 ÷ 3 x 7 - 8 + 12 = 19.3

    Correct Option: D

    25 ÷ 3 x 7 - 8 + 12 = 19.3

  1. After interchanging + and -, 8 and 7, which one of the following becomes correct ?








  1. View Hint View Answer Discuss in Forum

    After changing '+' and '-' , 8 and 7 the appropriate equation is,
    6 + 8 x 2 - 7 = 0
    L.H.S. = 6 - 7 x 2 + 8
    6 - 14 + 8
    14 - 14 = 0 = R.H.S.

    Correct Option: C

    After changing '+' and '-' , 8 and 7 the appropriate equation is,
    6 + 8 x 2 - 7 = 0
    L.H.S. = 6 - 7 x 2 + 8
    6 - 14 + 8
    14 - 14 = 0 = R.H.S.

  1. If, + stand for division; x stands for addition; stands for multiplication; ÷ stands for subtraction, which of the following is correct ?








  1. View Hint View Answer Discuss in Forum

    After changing '+' = ÷ , '-' = x
    'x' = '+' '÷' = -
    the equation, 46 - 6 + 4 x 5 ÷ 3 = 71
    CHS = 46 x 6 ÷ 4 + 5 - 3
    = 276 ÷ 4 + 5 - 3
    = 69 + 5 - 3
    = 74 - 3 = 71 R.H.S.

    Correct Option: B

    After changing '+' = ÷ , '-' = x
    'x' = '+' '÷' = -
    the equation, 46 - 6 + 4 x 5 ÷ 3 = 71
    CHS = 46 x 6 ÷ 4 + 5 - 3
    = 276 ÷ 4 + 5 - 3
    = 69 + 5 - 3
    = 74 - 3 = 71 R.H.S.

  1. Which sequence of mathematical symbols can replace *in the given equation to balance the equation ?
    7 * 7 * 2 * 1 = 12








  1. View Hint View Answer Discuss in Forum

    Given, 7 * 7 * 2 * 1 = 12
    Let us check all the options one by one.

    Correct Option: B

    Given, 7 * 7 * 2 * 1 = 12
    Let us check all the options one by one.
    From option (a), putting the signs in given equation, we get
    7 x 7 - 2 ÷ 1 = 12 ⇒ 7 x 7 - 2 = 12
    ⇒ 49 - 2 = 12 ⇒ 47 = 12
    ⇒ LHS ≠ RHS
    So, option (a) is incorrect.
    From option (b), putting the signs in given equation, we get
    7 + 7 - 2 x 1 = 12 ⇒ 7 + 7 - 2 = 12
    ⇒ 14 - 2 = 12 ⇒ 12 = 12
    Hence, option (b) is correct and there is no need to check remaining options .