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  • Question
  • Out of the 60 students of a class, 29 took Mathematics, 32 took Biology and 8 took none of the two subjects. How many students took both Mathematics and Biology?


  • Options
  • A. 8
  • B. 9
  • C. 7
  • D. 6

  • Correct Answer


  • Explanation

    Number of students who took only Mathematics n(m) = 29
    Number of students who took only biology n(b) = 32
    Total number of students n(t) = 60
    Total number of students of both mathematics and biology n(m b) = 60 - 8 = 52
    Total number of students who took both = 32 + 29 - 52 = 9

  • Tags: AIEEE, Bank Exams, CAT

    Simplification problems


    Search Results


    • 1. If 'Q ' means ' +', 'J ' means ' X',T ' ' means '- ' and 'K ' means ' ÷ ', then what is the value of18K3Q7J ?

    • Options
    • A. 15
    • B. 10
    • C. 18
    • D. 12
    • Discuss
    • 2. If a - 1a =7,then a2 + 1a2 =?

    • Options
    • A. 54
    • B. 51
    • C. 53
    • D. 52
    • Discuss
    • 3. What should come in place of question mark (?) in the following question? (You do not have to calculate the exact value.) (?80.997 - ?25.001) × (?120.98 + ?16.02) = ?

    • Options
    • A. 20
    • B. 30
    • C. 40
    • D. 50
    • Discuss
    • 4. What will come in the place of question mark (?) in the following question (You do not have to calculate the exact value)? 53.01 - 345.02 ÷ 22.99 = 2 ×(?)

    • Options
    • A. 14
    • B. 19
    • C. 24
    • D. 54
    • Discuss
    • 5. What will come in the place of question mark (?) in the following question (You do not have to calculate the exact value)? (184.002 - 29 ÷ 5) × 29.997 = ?

    • Options
    • A. 5140
    • B. 5240
    • C. 5340
    • D. 5440
    • Discuss
    • 6. ( 1155 ) +(18 ? 6) × 9 =?

    • Options
    • A. 113
    • B. 115
    • C. 100
    • D. 110
    • Discuss
    • 7. In the following question, correct the equation by interchanging two signs. 4 x 3 ? 6 ÷ 2 + 7 = 8

    • Options
    • A. ? and +
    • B. x and ?
    • C. ÷ and x
    • D. x and +
    • Discuss
    • 8. If x = 6+26 , then what is the value of x-1 + 1x-1 ?

    • Options
    • A. 2?3
    • B. 3?2
    • C. 2?2
    • D. 3?3
    • Discuss
    • 9. If a + b + c = 27, then what is the value of (a ? 7)3 + (b ? 9)3 + (c ? 11)3 ? 3(a ? 7)(b ? 9)(c ? 11) ?

    • Options
    • A. 0
    • B. 9
    • C. 27
    • D. 3
    • Discuss
    • 10. What is the smplified value of Sin2A/1+Cos2A ?

    • Options
    • A. tan A
    • B. cot A
    • C. sin A
    • D. cos A
    • Discuss


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