logo

CuriousTab

CuriousTab

Discussion


Home Aptitude Simplification Comments

  • Question
  • If m n = 2 , mn = 15 , (m , n > 0) then the value of m2-n2m3-n3


  • Options
  • A. 1856
  • B. 1658
  • C. 1586
  • D. 1568

  • Correct Answer
  • 1568 

  • Tags: Bank Exams

    Simplification problems


    Search Results


    • 1. If 4(x+y) = 256 and (256)(x-y) = 4 , then what is the value of x and y?

    • Options
    • A. 17/8, 15/8
    • B. 17/4, 15/4
    • C. 9/17, 15/17
    • D. 8/17, 8/15
    • Discuss
    • 2. If 5 sec ? ? 3 tan ? = 5, then what is the value of 5 tan ? ? 3 sec ??

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 4
    • Discuss
    • 3. The angle of elevation of the top of a tower from a point A on the ground is 30°. On moving a distance of 20 metres towards the foot of the tower to a point B, the angle of elevation increases to 60°. The height of the tower in meters is

    • Options
    • A. ?3
    • B. 5?3
    • C. 10?3
    • D. 20?3
    • Discuss
    • 4. If a.sin 45°.cos 45°.tan60° = tan 245° cos60° then find the value of a ?

    • Options
    • A. 13
    • B. 3
    • C. 1
    • D. 32
    • Discuss
    • 5. When 721 + 722 + 723 + 724 is divided by 25 the remainder is:

    • Options
    • A. 5
    • B. 17
    • C. 7
    • D. 0
    • Discuss
    • 6. If (x + y + z) = 12, xy + yz + zx = 44 and xyz = 48, then what is the value of x3 + y3+ z3 ?

    • Options
    • A. 104
    • B. 144
    • C. 196
    • D. 288
    • Discuss
    • 7. If x3 ? y3 = 81 and x ? y = 3, then what is the value of x2 + y2 ?

    • Options
    • A. 18
    • B. 21
    • C. 27
    • D. 36
    • Discuss
    • 8. If cot A = [sin B/(1 ? cos B)], then what is the value of cot 2A?

    • Options
    • A. cot(B/2)
    • B. cot 2B
    • C. cot B
    • D. tan B
    • Discuss
    • 9. For the inequation x^2?7x + 12 > 0, which one of the following is correct ?

    • Options
    • A. 3 < x < 4
    • B. ?? < x < 3 only
    • C. 4 < x < ? only
    • D. ?? < x < 3 or 4 < x < ?
    • Discuss
    • 10. If tan x = 1, 0 < x < 90, then what is the value of 2 sin x cos x?

    • Options
    • A. 1/2
    • B. 1
    • C. ?3/2
    • D. ?3
    • Discuss


    Comments

    There are no comments.

Enter a new Comment