The mean of the numbers obtained on throwing a die having written 1 on three
faces, 2 on two faces and 5 on one face is
(A) 1
(B) 2
(C) 5
(D) 8
3
17 Suppose that two cards are drawn at random from a deck of cards Let X be the
number of aces obtained Then the value of E(X) is
(A)
37
221
(B)
135
(C)
131
(D)
2
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MATHEMATICS
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