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  • Question
  • If the number 42573 * is exactly divisible by 72, then the minimum value of * is:


  • Options
  • A. 4
  • B. 5
  • C. 6
  • D. 7
  • E. 8

  • Correct Answer


  • Explanation
    72 = 9 x8, where 9 and 8 are co-prime.

    The minimum value of x for which 73x for which 73x is divisible by 8 is, x = 6.

    Sum of digits in 425736 = (4 + 2 + 5 + 7 + 3 + 6) = 27, which is divisible by 9.

    ∴Required value of * is 6.

  • Tags: Bank Exams

    More questions

    • 1. 
      A alone can do a piece of work in 8 days while B alone can do it in 10 days. If they together complete this work and get ? 900 as their remuneration, then find the share of both the persons.

    • Options
    • A. A = ? 800 and B = ? 100
    • B. A = ? 500 and B = ? 400
    • C. A = ? 600 and B = ? 300
    • D. A = ? 300 and B = ? 600
    • Discuss
    • 2. 
      0. 53

    • Options
    • A. 53 / 100
    • B. 53 / 90
    • C. 53 / 99
    • D. 26 / 45
    • Discuss
    • 3. If 0.75 : x :: 5 : 8, then x is equal to:

    • Options
    • A. 1.12
    • B. 1.2
    • C. 1.25
    • D. 1.30
    • Discuss
    • 4. 
      Nine examiners can examine a certain number of answer books in 12 days by working 5 hours a day. How many hours in a day should 4 examiners work to examine twice the number of answer books in 30 days?

    • Options
    • A. 9
    • B. 11
    • C. 13
    • D. 17
    • Discuss
    • 5. 
      Find the value of the expression 1 - 2 + 3 - 4 + 5 - 6 + 7 + .... upto 100 terms .?

    • Options
    • A. -150
    • B. -60
    • C. -100
    • D. -50
    • Discuss
    • 6. 
      The angles of depression of two ships from the top of a light house are 45° and 30° towards east. if the ships are 200 m apart, find the height of the light house .

    • Options
    • A. 100 m
    • B. 173 m
    • C. 200 m
    • D. 273 m
    • Discuss
    • 7. 
      The probability that a person will hit a target in shooting practice is 0.3 . If he shoots 10 times. Then the probability of his shooting the target is?

    • Options
    • A. 1
    • B. 1 - (0.7)10
    • C. (0.7)10
    • D. (0.3)10
    • Discuss
    • 8. 
      A fort had provision of food for 150 men for 45 days. After 10 days, 25 men left the fort. The number of days for which the remaining food will last, is:

    • Options
    • A. 39
    • B. 37
    • C. 42
    • D. 56
    • Discuss
    • 9. 
      If m men working m h per day, can do m units of work in m days, then n men working n h per day would be able to complete how units of work in days?

    • Options
    • A. n3/m2
    • B. m3/n2
    • C. m4/n2
    • D. n4/m3
    • Discuss
    • 10. 
      The average age of two boys and their father is greater then average age of those two boys and their mother by 3 yr. The average age of the four is 19 yr. If the average age of the two boys be 5 1/ 2, then find the age of the father and mother.

    • Options
    • A. 37 yr and 28 yr
    • B. 47 yr and 38 yr
    • C. 50 yr and 41 yr
    • D. 35 yr and 32 yr
    • Discuss


    Comments

    Avatar
    Manikanta
    I don't understand the part 73x. Can u please elaborate?


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