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    Question

    Directions : A number arrangement machine,when given a particular input, rearranges it following a particular rule. The following is the illustration of the input and the steps of arrangement: Input: 245, 316, 436, 519, 868, 710, 689 Step I: 710, 316, 436, 519, 868, 245, 689 Step II: 710, 316, 245, 519, 868, 436, 689 Step III: 710, 316, 245, 436, 868, 519, 689 Step IV: 710, 316, 245, 436, 519, 868, 689 Step IV is the last step for the given input.

    Following is the step III for an input. What will be

    the first step for the input? Step III: 432, 433, 542, 666, 734, 355, 574
    A 666, 542, 432, 734, 433, 574, 355 Correct Answer Incorrect Answer
    B 542, 666, 734, 432, 433, 574, 355 Correct Answer Incorrect Answer
    C 355, 574, 433, 432, 734, 666, 542 Correct Answer Incorrect Answer
    D Can’t be determined Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Here the rule followed is: The sum of the digits is calculated. Then in step I, the number with lowest sum of its digits interchanges with the first number. [If the first number has already the lowest sum of its digits then the number with second lowest sum of its digits interchanges with the second number.] The process continues until the numbers get arranged in ascendingorder on the basis of their sum of digits. In these types previous steps can’t be determined

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