1. The probability that a student passes Subject A, B or C is 98%. The probability that he or she passes A is 41%, B is 59%. The probability that he or she passes A and C is 25% and B and C is 20%. The probability that he or she passes all the 3 subjects is 14%. What is the probability that he or she passes subject C?
2. The cost price of 10 articles is equal to the selling price of 9 articles. find the profit percent.
A. 101/9 %
B. 100/9 %
C. 102/9 %
D. 103/9 %
3. 8 4.5 5.5 13 56 ?
4. Ritu has 3 shirts in shades of red, 4 in yellow shades and 5 in green shades . Three shirts are picked at random. The probability that all of those are in red shades is :
5. The ratio of radii of two right circular cylinders is 6:7 and their heights are in the ratio 5:9. The ratio of their respective curved surface areas is