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Approach If A and B work together, they will complete a job in 7.5 days. However, if A works alone and completes half the job and then B takes over and completes the remaining half alone, they will be able to complete the job in 20 days. How long will B alone take to do the job is A is more efficient than B?

approach Screenshot 2024-08-21 093027.png 54.48 KB

approach Screenshot 2024-08-21 093027.png 54.48 KB

approach? Find the remainder when (4! + 8! + 24! + 96! + 480!) is divided by 91?

approach? Find the remainder when (4! + 8! + 24! + 96! + 480!) is divided by 91?