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  • Question

  • If a - b = 10 and ab =-21, then what is the value of a3-b3 ?


  • Options
  • A. 316
  • B. 370
  • C. 185
  • D. 158

  • Correct Answer
  • 370 

    • Tags: Bank Exams

    Simplification problems

    Search Results

    • 1. If 1/3(12x/5 - 1/2) + 6/5 = 7/6, then what is the value of x?

    • Options
    • A. 1/6
    • B. -1/6
    • C. 1/5
    • D. -1/5
      • Discuss
    • 2. For x > 0, what is the minimum value of x + x+22x ?

    • Options
    • A. 1
    • B. 2
    • C. 2.5
    • D. 1.5
      • Discuss
    • 3. If a : b = c : d = 1 : 6, then what is the value of a2+c2b2+d2 ?

    • Options
    • A. 1/600
    • B. 1/60
    • C. 1/36
    • D. 1/360
      • Discuss
    • 4. For x = 462+3, what is the value of x+22x-22+x+23x-23

    • Options
    • A. 1
    • B. ?2
    • C. ?3
    • D. 2
      • Discuss
    • 5. Consider the following for real numbers ?, ?, ? and ? ? 1) sec ? = 1/4 2) tan ? = 20 3) cosec ? = 1/2 4) cos ? = 2 How many of the above statements are not possible?

    • Options
    • A. one
    • B. two
    • C. three
    • D. four
      • Discuss
    • 6. What is the reflection of the point (5, -2) in the line y = -1?

    • Options
    • A. (-7 , -2)
    • B. (-5 , 0)
    • C. (5 , 0)
    • D. (-7 , 2)
      • Discuss
    • 7. ax + 3y = 6 has slope -2/3. What is the value of a?

    • Options
    • A. -2
    • B. 2
    • C. 3
    • D. -3
      • Discuss
    • 8. What is the value of Sin 30° + 2 Cos 30° ?

    • Options
    • A. (2?2 + 3)/?6
    • B. (9 + 2?3)/9
    • C. (1 + 2?3)/2
    • D. (2?6 + 1)/?3
      • Discuss
    • 9. ? XYZ is right angled at Y. If m?Z = 60°, what is the length of YZ (in cm), if ZX = 3?3 cm?

    • Options
    • A. 3?3/2
    • B. 3?3
    • C. 9
    • D. 6
      • Discuss
    • 10. If Sec ? = 13/12, then Cot ? = ?

    • Options
    • A. 12/5
    • B. 13/5
    • C. 5/13
    • D. 5/12
      • Discuss

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