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  • Question
  • If x = a + 1/a, y = a - 1/a, then the value of x4+y4-2x2y2


  • Options
  • A. 4
  • B. 8
  • C. 16
  • D. 64

  • Correct Answer
  • 16 

  • Tags: Bank Exams

    Simplification problems


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    • 1. A 8 cm long perpendicular is drawn from the centre of a circle to a 12 cm long chord. The diameter of the circle is

    • Options
    • A. 10 cm
    • B. 12 cm
    • C. 16 cm
    • D. 20 cm
    • Discuss
    • 2. If a+b=5 and ab=3, then the value of (a2+b2) is

    • Options
    • A. 17
    • B. 18
    • C. 19
    • D. 20
    • Discuss
    • 3. If x2+5x+6 = 0 , then the value of 2xx2-7x+6 is

    • Options
    • A. 1/6
    • B. 1/3
    • C. -1/6
    • D. -1/3
    • Discuss
    • 4. A spherical lead ball of radius 6 cm is melted and small lead balls of radius 3 mm are made. The total number of possible small lead balls is

    • Options
    • A. 4250
    • B. 4000
    • C. 8005
    • D. 8000
    • Discuss
    • 5. A 1.6 m tall observer is 45 meters away from a tower. The angle of elevation from his eye to the top of the tower is 30°, then the height of the tower in meters is

    • Options
    • A. 25.98
    • B. 26.58
    • C. 27.58
    • D. 27.98
    • Discuss
    • 6. If 2x+4-2x+2=3 , then the value of x?

    • Options
    • A. 0
    • B. 2
    • C. -1
    • D. -2
    • Discuss
    • 7. If 3n = 2187 , then the value of n is:

    • Options
    • A. 13
    • B. 14
    • C. 15
    • D. 16
    • Discuss
    • 8. If x+1x=5, then 6xx2+x+1 value is

    • Options
    • A. 3
    • B. 2
    • C. 1
    • D. 0
    • Discuss
    • 9. If sinA + sin2A =1 then what is the value of cos2A + cos4A

    • Options
    • A. 1/2
    • B. 1
    • C. 2
    • D. 3
    • Discuss
    • 10. A man spends in 8 months as much as he earns in 6 months. He saves Rs. 6000 in a year. His average monthly income is

    • Options
    • A. Rs. 2400
    • B. Rs. 2000
    • C. Rs. 2150
    • D. Rs. 1800
    • Discuss


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