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  • Question
  • If a = 73, b = 74 and c = 75, then what is the value of a3 + b3 + c3 ? 3abc ?


  • Options
  • A. 365
  • B. 444
  • C. 666
  • D. 999

  • Correct Answer
  • 666 

  • Tags: Bank Exams

    Simplification problems


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    • 1. The inradius of a equilateral triangle is 10 cm. What is the circum-radius (in cm) of the same triangle?

    • Options
    • A. 5
    • B. 10?3
    • C. 20
    • D. 20?3
    • Discuss
    • 2. If 27x + 27[x?(1/3)] = 972, then what is the value of x?

    • Options
    • A. 2
    • B. 3
    • C. 4
    • D. 5
    • Discuss
    • 3. If x = (?2 + 1)/(?2 ? 1), then what is the value of (x5 + x4 + x2 + x)/x3 ?

    • Options
    • A. 5
    • B. 2
    • C. 2?3
    • D. 2?2
    • Discuss
    • 4. When [x + (1/x)] = 5, then what is the value of [x ? (1/x)]?

    • Options
    • A. 11
    • B. ± ?22
    • C. 21
    • D. ± ?21
    • Discuss
    • 5. Find x, if 5x-6+5x+6 = 6

    • Options
    • A. -4
    • B. 0
    • C. 2
    • D. 4
    • Discuss
    • 6. If x2 + (1/x2) = 31/9 and x > 0, then what is the value of x3 + (1/x3) ?

    • Options
    • A. 70/9
    • B. 154/27
    • C. 349/27
    • D. 349/7
    • Discuss
    • 7. If x ? (1/x) = 3, then what is the value of (2x4 + 3x3 + 13x2 ? 3x + 2) / (3x4 + 3) ?

    • Options
    • A. 1/3
    • B. 2/3
    • C. 4/3
    • D. 5/3
    • Discuss
    • 8. What is the simplified value of sec6 A ? tan6 A ? 3 sec2 A tan2 A ?

    • Options
    • A. -1
    • B. 0
    • C. 1
    • D. sec A tan A
    • Discuss
    • 9. What is the simplified value of (cosec A ? sin A)(sec A ? cos A)(tan A + cot A)?

    • Options
    • A. -1
    • B. 0
    • C. 1
    • D. 2
    • Discuss
    • 10. What is the simplified value of (cos4 A ? sin4 A) ?

    • Options
    • A. 0
    • B. 2 cos2 A
    • C. cos2A
    • D. 1
    • Discuss


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