Multiple Choice Questions on Find the average of first 20 multiple of 5 ........ for IBPS RRB - Officers Exam Preparation

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Multiple Choice Questions

Find the average of first 20 multiple of 5 ........

Quantitative Aptitude(IBPS RRB PO) Average
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    Find the average of first 20 multiple of 5?

    52

    Incorrect Answer

    53

    Incorrect Answer

    52.5

    Correct Answer

    53.5

    Incorrect Answer
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    Explanation:

    Solution: 
    first 20 multiple ……
    5,10,15,…………100.
    When difference is same then average = (1st term + last term)/2
    5+100/2 = 52.5

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