Suppose you have a 1/10 chance of winning with a scratch-off lottery ticket. if you buy 4 tickets, what is the probability of winning with all 4?

Airline passengers arrive randomly and independently at the passenger-screening facility at a major international airport. the mean arrival rate is 10 passengers per minutes. compute the following probabilities. p(x = 4) p(x > 11)

Interest begins accruing the date of the transaction except for auto loans mortgages credit card cash advances credit card purchases

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25