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  • Question
  • What is value of P+QP-Q if PQ=7 ?


  • Options
  • A. 1/3
  • B. 2/3
  • C. 4/3
  • D. 5/3

  • Correct Answer
  • 4/3 

    Explanation

    h e n c e   P = 7 Q

    P + Q P - Q = 7 Q + Q 7 Q - Q = 8 Q 6 Q = 4 3


  • Simplification problems


    Search Results


    • 1. If a ? (1/a) = b, b ? (1/b) = c and c ? (1/c) = a, then what is the value of (1/ab) + (1/bc) + (1/ca)?

    • Options
    • A. ? 3
    • B. ? 6
    • C. ? 1
    • D. ? 9
    • Discuss
    • 2. If x = 11, the value of x5 - 12x4 + 12x3 - 12x2 + 12x - 1 is

    • Options
    • A. 11
    • B. 10
    • C. 12
    • D. -10
    • Discuss
    • 3. Calculate the value of 61681x61681-31681x3168130000

    • Options
    • A. 93352
    • B. 94362
    • C. 93362
    • D. 95362
    • Discuss
    • 4. Point P (-2, 5) is the midpoint of segment AB. Co-ordinates of A are (-5, y) and B are (x, 3). What is the value of x?

    • Options
    • A. 1
    • B. -1
    • C. 2
    • D. -2
    • Discuss
    • 5. Common factor of 24b6c8d2, 18a6c2d4, 12a4b4 is

    • Options
    • A. 72a2b2c2d2
    • B. 72a6b6c8d4
    • C. 6a2b2
    • D. 6
    • Discuss
    • 6. 72 ÷ 52 × 3272 ÷ 52 of 32 ÷ 5.25

    • Options
    • A. 3/5
    • B. 3/6
    • C. 3/7
    • D. 3/8
    • Discuss
    • 7. Simplify the following : 4 15 × 3 13 + ? = 20% of 120

    • Options
    • A. 10
    • B. 24
    • C. 36
    • D. 40
    • Discuss
    • 8. Simplify 39.96% of 649.85 ÷ 13.07 = 45.14 - ?

    • Options
    • A. 25
    • B. 26
    • C. 27
    • D. 28
    • Discuss
    • 9. In each question two equations numbered I and II are given,you haveto solve both the equation and choose the correctanswer. I. x2+ 30x + 81 = 0 II.y2-9y -162 = 0

    • Options
    • A. x > y
    • B. x>y
    • C. x < y
    • D. x
    • Discuss
    • 10. Solve the following : 27 - [38 - {46 - (15 - 13 - 2)}]

    • Options
    • A. 31
    • B. 35
    • C. 30
    • D. 29
    • Discuss


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