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  • Question
  • How many number of weights do you need to weight 31 kg of Rice if you have one kg of weight stone ?


  • Options
  • A. 3
  • B. 5
  • C. 7
  • D. 9

  • Correct Answer


  • Explanation

    There are total 5 ways.
    we have only one kg of weight so,
    2kg = 1kg + 1kg
    4kg = 1 + 2 + 1
    8kg = 1 + 2 + 4 + 1
    16kg = 1 + 2 + 4 + 8 + 1
    31kg = 1 + 2 + 4 + 8 + 16
    So 5 weights are needed.

  • Tags: AIEEE, Bank Exams, CAT, GATE, GRE, TOEFL, Bank Clerk, Bank PO

    Arithmetic Reasoning problems


    Search Results


    • 1. If two line pa + b = 2 and 3a + b = 4 are parallel to each other, then what is the value of p ?

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 4
    • Discuss
    • 2. In a parking lot there are two types of vehicles, two wheelers and four wheelers. The total number of the vehicles in the parking lot is 200. When the number of the wheels of all the vehicles is counted it is counted to be 580. Find the total number of the four wheeler vehicles in the parking lot ?

    • Options
    • A. 110
    • B. 90
    • C. 100
    • D. 180
    • Discuss
    • 3. If 'x' means '-', '÷' means '+', '-' means '÷' and '+' means 'x', then 24 - 4 ÷ 6 x 3 + 4 = ?

    • Options
    • A. 0
    • B. 1
    • C. 2
    • D. 3
    • Discuss
    • 4. A Child has 1200 five rupee coins. He wants to place them in such a way that the number of rows and the number of columns remains the same. What is the minimum number of coins that he needs more for this purpose?

    • Options
    • A. 125
    • B. 96
    • C. 35
    • D. 25
    • Discuss
    • 5. Find the least number by which 175760 be divided to make it a perfect cube.

    • Options
    • A. 6
    • B. 10
    • C. 9
    • D. 30
    • Discuss
    • 6. In a class of students, if 1 is absent rest of people can be divided into 6 equal parts and if 2 are absent rest of them are divided into 7 equal parts, how many students are present in the class ?

    • Options
    • A. 28
    • B. 19
    • C. 57
    • D. 37
    • Discuss
    • 7. The sum of the interior angles of a polygon is twice the sum of its exterior angles. How many sides does the polygon have ?

    • Options
    • A. 6
    • B. 4
    • C. 5
    • D. 7
    • Discuss
    • 8. Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is ?

    • Options
    • A. 5
    • B. 4
    • C. 7
    • D. 6
    • Discuss
    • 9. 18 tens 20 ones =

    • Options
    • A. 1820
    • B. 180
    • C. 200
    • D. 160
    • Discuss
    • 10. Lami's theorem is applicable only for

    • Options
    • A. Non-Concurrent forces
    • B. Coplanar forces
    • C. Coplanar and concurrent forces
    • D. Any type of forces
    • Discuss


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