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1 year = 365 day * 24 hours * 60 minutes * 60 seconds

1 year = 31536000 seconds

for 15 years

15*1 years = 31536000*15 seconds

15 years = 473040000 seconds

BY:- SAIFULLAH JAMALI

INSTITUTE OF PHYSICS

UNIVERSITY OF SINDH, Pakistan

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14y ago

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