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  • Question
  • If a+b=3 then the value of a3+b3+9ab-27 is


  • Options
  • A. 24
  • B. 25
  • C. 0
  • D. 27

  • Correct Answer


  • Tags: Bank Exams

    Simplification problems


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    • 1. The value of 3x9n+1+9x32n-19x32n-6x9n-1 is equal to

    • Options
    • A. 335
    • B. 325
    • C. 315
    • D. 3
    • Discuss
    • 2. If sinA + sin2A = 1 then what is the value of cos2A + cos4A ?

    • Options
    • A. 1
    • B. 2
    • C. 1/2
    • D. 1/4
    • Discuss
    • 3. If 5x + 1/x = 10, then x2 + 125x2 is equal to

    • Options
    • A. 215
    • B. 335
    • C. 315
    • D. 235
    • Discuss
    • 4. A and B together have Rs. 6300. If 5/19 of A's amount is equal to 2/5 of B's amount. The amount of 'B' is

    • Options
    • A. Rs. 2500
    • B. Rs. 3800
    • C. Rs.2300
    • D. Rs. 4000
    • Discuss
    • 5. If xy = 56 and x2+ y2= 113 , then what will be the value of (x + y)?

    • Options
    • A. 29
    • B. 21
    • C. 36
    • D. 15
    • Discuss
    • 6. If x+1/x = 2, then the value of x7+2/x6 is equal to?

    • Options
    • A. 0
    • B. 1
    • C. 2
    • D. 3
    • Discuss
    • 7. If 5 sin2?+ 4 cos2?= 9/2 and 0

    • Options
    • A. 1
    • B. 0
    • C. -1
    • D. 1/4
    • Discuss
    • 8. What is the equation of the line which intercepts xaxis and yaxis at 3/4 and 2/3 respectively?

    • Options
    • A. 8x + 9y = 6
    • B. 9x + 8y = 12
    • C. 8x - 9y = 6
    • D. 9x + 8y = -12
    • Discuss
    • 9. What is the value of tan3A?

    • Options
    • A. (3tanA - tan3A)/(1 - 3tan2A)
    • B. (3tanA + tan3A)/(1 + 3tan2A)
    • C. (3tanA - tan3A)/(1 + 3tan2A)
    • D. (3tanA + tan3A)/(1- 3tan2A)
    • Discuss
    • 10. If cot2A - cos2A = x , then value of x is

    • Options
    • A. tan2Asec2A
    • B. cotAcosA
    • C. cot2Acos2A
    • D. tanAsecA
    • Discuss


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