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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

A) Find the probability that a leap year, selected at random will have 53 sundays

b) A bag contains 10 white balls and x black balls. If the probability of drawing a black ball is double that of a white ball, find X c) In a sample of 500 items, 120 are found to be defective. Find the probability that the item selected at random is (i) defective (ii) non-defective

A) a leap year has 366 days it means 52 weeks(52 sundays) and 2 odd days. then, 2 days may be sunday and monday monday and tuesday tuesday and wednesday wednesday and thursday thursday and friday friday and saturday saturday and sunday probability of 53 sundays = no.of sundays total days = 2 7 (b) Total balls=black balls +white balls x+10 p(drawing black balls)=2 p(drawing white balls) x =2 10 x+10 x+10 x=20 black balls