3 coins are tossed at random. Construct the sample space and find the probability of getting:

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50 daily workers done by 40 day's 

∴ 1 daily workers done by 40×50 days

∴  30 daily workers done by 40×50/30= 200/3 days.

 

In 2 days, the worked done by (1/40+3/200)= 1/25 parts. 

 

   1/25 parts done by 2 days 

∴ 1 part done by 25×2= 50 days. 

 

So, days will be required in (50-40)= 10 days. (answered)

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