Question

21 years has how many months, weeks, hours, minutes and seconds inexact??

Answer 1

21 years has - 252 months 
                      - 1092 weeks
                       - 183960 hours
                        -11037600mins
                        -662256000secs


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Answer 2

21 year = 21*12 months
= 252 months
= 7672 days /7
= 1096 weeks
= 184128 hours
= 11047680 minutes
= 662860800 seconds.

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