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7th Class Mental Ability Mathematical Reasoning Question Bank Mathematical Reasoning

  • question_answer
    If \[15\text{ }\times \text{ }20\text{ }\times \text{ }60\text{ }=\text{ }20\text{ }\times \text{ }60\text{ }\times \text{ }15\] and \[21\text{ }\times \text{ }42\text{ }\times \text{ }63\text{ }=\text{ }42\text{ }\times \text{ }63\text{ }\times \text{ }21\] then \[\text{19 }\times \text{ 17 }\times \text{ 41 = ?}\]

    A) \[\text{17 }\times \text{ 19 }\times \text{ 41}\]

    B)  \[\text{17  }\!\!\times\!\!\text{  41  }\!\!\times\!\!\text{  19}\]  

    C)  \[\text{19  }\!\!\times\!\!\text{  41  }\!\!\times\!\!\text{  17}\]

    D)         \[\text{41  }\!\!\times\!\!\text{  19  }\!\!\times\!\!\text{  17}\]

    Correct Answer: B

    Solution :

     In the given expression, middle number is written first, last number in the middle and first number is written in the last. \[19\times 17\times 41=17\times 41\times 19\]


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