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  • Question

  • If 102/5 × 108/5 = 10n, the value of n is :


  • Options
  • A. 2
  • B. 3
  • C. 6
  • D. 4

  • Correct Answer
  • 2 

    Explanation

    ? 102/5 × 108/5 = 10n
    ? 102/5 + 8/5 = 10n
    ? 1010/5 = 10n ? 102 = 10n ? n = 2
    Hence, the value of n is 2.

    • Surds and Indices problems

    Search Results

    • 1. 
      The value of ( 8 ) - ( 2 - 2 ) is :

    • Options
    • A. - 1 2 4
    • B. - 3 2 4
    • C. 3 2 4
    • D. - 1 2 2
      • Discuss
    • 2. 
      The value of ( -
      1
      		) -(2/3)
      125

    • Options
    • A. 1 25
    • B. 25
    • C. 5
    • D. 1 5
      • Discuss
    • 3. 
      The expression
      ( - 1 ) 132
      		is equivalent to :
      5- 1 + 3- 1

    • Options
    • A. 16 9
    • B. - 15 8
    • C. 15 8
    • D. 17 8
      • Discuss
    • 4. 
      The value of 273 × 34 ÷ 310 is equal to :

    • Options
    • A. 9
    • B. 27
    • C. 81
    • D. 1 27
      • Discuss
    • 5. 
      Simplify ( 6a-2bc-3/4ab-3c2 ) ÷ ( 5a-3 b2c-1/3ab-2c3 )

    • Options
    • A. 9/10ac
    • B. 9/10ac-1
    • C. 9/10ac2
    • D. 9/10ac-3
      • Discuss
    • 6. 
      The positive exponential function of
      a -3 a -4
      		is :
      a-5

    • Options
    • A. a2
    • B. 1 a3
    • C. 1 a4
    • D. 1 a2
      • Discuss
    • 7. 
      The value of (
      2 3
      		) 2/3 x (
      3 3
      		) is :
      3 2 2 2

    • Options
    • A. 64/3
    • B. 82/3
    • C. 62/3
    • D. 91/3
      • Discuss
    • 8. 
      The value of 12x2y4z3 ÷ (2xy2 × 3yz2) will be :

    • Options
    • A. 2xyz
    • B. xyz
    • C. 1 xyz
    • D. 2 xyz
      • Discuss
    • 9. 
      The value of
      x -2 y -4
      		÷
      y -2
      		is :
      x-3 . y-1 x-1

    • Options
    • A. y
    • B. 1 y
    • C. xy
    • D. 1 xy
      • Discuss
    • 10. 
      if ?4 × 43/2 ÷ 4-3 = 2x, the value of x will be :

    • Options
    • A. 16
    • B. 8
    • C. 12
    • D. 4
      • Discuss

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