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Q.

If a card is drawn at random from a packet of 100 cards numbered 1 to 100, the probability of drawing a number on the card that is a cube is

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a

3100

b

125

c

9100

d

110

answer is B.

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Detailed Solution

n(S)= 100C1 E= {1,8,27,64} n(E) = 4 the probability of drawing a number on the card that is a cube is P(E) = 4100 = 125
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