Multiple Choice Questions on Consider all those two digits positive integers less than 50 which when divided by 4 yield unity as ........... for CDS Exam Preparation

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Multiple Choice Questions

Consider all those two digits positive integers less than 50 which when divided by 4 yield unity as ...........

Quantitative Aptitude (CDS) Number System
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    Consider all those two-digits positive integers less than 50, which when divided by 4 yield unity as remainder. What is their sum?

    310

    Correct Answer

    314

    Incorrect Answer

    218

    Incorrect Answer

    323

    Incorrect Answer
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    Explanation:

    Let the two-digits numbers less than 50 which when divided by 4 yield unity as remainder be 13, 17,...,49. Here, first term, a = 13, common difference, ?? =4 and n = 10.

    sum=n/2[2a+(n-1)d]
    required sum= 310

    By: Munesh Kumari
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