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7th Class Mathematics Related to Competitive Exam Question Bank Mathematical Operations

  • question_answer
    DIRECTIONS: In each of the following questions, three statements of numbers following same rules are given. Find the rule and accordingly find the value of the number? If 3 + 2 = 7, 4 + 3 = 10, 5 + 4 = 13, then 6 + 5 =?

    A) 17                               

    B) 18

    C) 15                               

    D) 16

    Correct Answer: D

    Solution :

        The rule is\[a+b=a+2b\] \[\therefore \]    \[6+5=6+2\times 5=6+10=16\]


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