self Maths Puzzle

21. A can hit the target 4 times in five shots. B can hit three times in 4 shots, C can hit the target twice in three shots. They fire a volley i.e., shot simultaneously. What is the probability that exactly 2 shots hot the target?

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self Other Question

If each of the vowels i.e. A, E, I, O, & U along with the 3rd letter to its right in the alphabet are taken out and arranged one after the other in the same order followed by the remaining letters of the alphabet, which of the following will be 5th to the left of the 19th letter from the left in the new arrangement? A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
(a) G
(b) H
(c) J
(d) W
(e) none of these 3 people to be seated on 9 seats such that none of them are adjacent