Multiple Choice Questions on Insert the missing number 4 9 20 43 90 ........ for SEBI Grade A ( Officer) Exam Preparation

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Multiple Choice Questions

Insert the missing number 4 9 20 43 90 ........

Quantitative Aptitude ( Phase -I) Number series
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    Insert the missing number 4, 9, 20, 43, 90, -------

    185

    Incorrect Answer

    36

    Incorrect Answer

    125

    Incorrect Answer

    64

    Correct Answer
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    Explanation:

    4*2+1=9
    9*2+2=20
    20*2+3=43
    43*2+4=90
    90*2+5=185

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