Fifty students in a class took a test in French and Mathematics . If 14 of them passed in French only , 23 passed in both subjects and 5 failed both subjects find,
1 ) number of students who passed in French 2 ) the probability of selecting a student who passed in Maths

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent.the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244