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  • Question
  • How many numbers with distinct digits are possible product of whose digits is 18?


  • Options
  • A. 12
  • B. 8
  • C. 6
  • D. 4

  • Correct Answer


  • Explanation

    Two digit numbers: The two digits can be 2 and 9: Two possibilities 29 and 92.

    Three-digit numbers: The three digits can be 1, 2 and 9 => 3! Or 6 possibilities.

    We cannot have three digits as (3, 3, 2) as the digits have to be distinct.

    We cannot have numbers with 4 digits or more without repeating the digits.

    So, there are totally 8 numbers.


  • Numbers problems


    Search Results


    • 1. 3x + y = 19 and x + 3y = 1. Find the value of 2x + 2y

    • Options
    • A. 20
    • B. 18
    • C. 11
    • D. 10
    • Discuss
    • 2. What is the value of 4 in 475?

    • Options
    • A. 4
    • B. 400
    • C. 475
    • D. 40
    • Discuss
    • 3. The sum of the digits of a two-digits number is 10,while when the digits are reversed, the number decreases by 54. Find the changed number ?

    • Options
    • A. 28
    • B. 19
    • C. 37
    • D. 46
    • Discuss
    • 4. A number divided by 296 leaves the remainder 75. If the same number is divided by 37, what will be the remainder ?

    • Options
    • A. 0
    • B. 1
    • C. 11
    • D. 8
    • Discuss
    • 5. Courier charges for packages to a certain destination are 65 cents for the first 250 grams and 10 cents for each additional 100 grams or part thereof. What could be the weight in grams of a package for which the charge is $1.55 ?

    • Options
    • A. 1155
    • B. 1145
    • C. 1040
    • D. None
    • Discuss
    • 6. Find the remainder when 1234 x 1235 x 1237 is divided by 8.

    • Options
    • A. 4
    • B. 2
    • C. 0
    • D. 6
    • Discuss
    • 7. A teacher multiplies 987 by a certain number and obtains 556781 as her answer. If in the answer, both 6 and 7 are wrong but the other digits are correct, then the correct answer will be

    • Options
    • A. 553681
    • B. 555181
    • C. 556581
    • D. 555681
    • Discuss
    • 8. What is the right most integer of the expression 65776759 + 54697467 ?

    • Options
    • A. 4
    • B. 6
    • C. 9
    • D. 0
    • Discuss
    • 9. A box contains 90 screws each of 100 gms and 100 bolts each of 150 gms. If the entire box weighs 35.5 kg, then the weight of the empty box is ?

    • Options
    • A. 10.5 kgs
    • B. 12 kgs
    • C. 9.6 kgs
    • D. 11.5 kgs
    • Discuss
    • 10. How many digits will be there to the right of the decimal point in the product of 95.75 and 0.2554 ?

    • Options
    • A. 6
    • B. 7
    • C. 8
    • D. 9
    • Discuss


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