7th Class Mathematics Related to Competitive Exam Question Bank Number and Ranking

  • question_answer
    If 3 is subtracted from the middle digit of each of the following numbers and then the positions of the digits are reversed, which of the following will be the last digit of the middle number after they are arranged in descending order? 589 362 554 371 442

    A) 1                                             

    B) 2

    C) 3                                             

    D) 4

    Correct Answer: B

    Solution :

        On subtracting 3 from (he middle digits, the numbers become: 559 332 524 341412 Now, on reversing the positions of digits, we have: 955 233 425 143 214 Arranging these numbers in descending order, we have: 955 425 233 214 143 The middle number is 233 and its last digit is 3.


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