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  • Question
  • In a charity show tickets numbered consecutively from 101 through 350 are placed in a box. What is the probability that a ticket selected at random (blindly) will have a number with a hundredth digit of 2?


  • Options
  • A. 0.25
  • B. 0.5
  • C. 0.75
  • D. 0.40

  • Correct Answer
  • 0.40 

    Explanation

    250 numbers between 101 and 350 i.e. n(S)=250

    n(E)=100th digits of 2 = 299?199 = 100

    P(E)= n(E)/n(S) = 100/250 = 0.40


  • More questions

    • 1. 
      The least number by which 176 be multiplied to make the result a perfect square is?

    • Options
    • A. 8
    • B. 9
    • C. 10
    • D. 11
    • Discuss
    • 2. 
      A group of students decided to collect as many paise from each member of group as is the number of members. If the total collection amounts to Rs. 22.09, the number of members in the group is?

    • Options
    • A. 37
    • B. 47
    • C. 107
    • D. 43
    • Discuss
    • 3. 
      If ? 256 / ? x = 2, then x is equal to?

    • Options
    • A. 64
    • B. 128
    • C. 512
    • D. 1024
    • Discuss
    • 4. 
      If N = 11 9/ 16 then ? N =?

    • Options
    • A. 13/4
    • B. 11/4
    • C. 1.125
    • D. None of these
    • Discuss
    • 5. 
      If x = ?3 + ?2, then the value of (x + 1)/(x - 1) - (x - 1)/(x + 1) is?

    • Options
    • A. ?3
    • B. ?2
    • C. ?6
    • D. None of above
    • Discuss
    • 6. 
      Which among ?8 and ?1000 is greater?

    • Options
    • A. ?8
    • B. ?1000
    • C. Both are equal
    • D. None of these
    • Discuss
    • 7. 
      Which among ?81 and ?1 is smaller?

    • Options
    • A. ?81
    • B. ?1
    • C. Both are equal
    • D. None of these
    • Discuss
    • 8. 
      IF (14) 3 is added to the square of a number, the answer to obtained is 4425. What is the number?

    • Options
    • A. 1849
    • B. 43
    • C. 41
    • D. 1681
    • Discuss
    • 9. 
      Which among ?10 and ?8 is greater?

    • Options
    • A. ?10
    • B. ?8
    • C. Both are equal
    • D. None of these
    • Discuss
    • 10. 
      Find the least number which multiplied with 74088 will make it a perfect square?

    • Options
    • A. 42
    • B. 44
    • C. 46
    • D. 48
    • Discuss


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