If there are 10 cards numbered from 1 to 10 in a box, what is the probability that the card drawn will have a number less than 5?
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ANALYSIS
The number set = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }, a total of 10 numbers.
The numbers in this set, which are less than 5 are = { 1, 2, 3, 4 }, a total of 4 numbers.
Probability( Drawing a card of value less than 4 ) = (Number of cards of value 4 or less )/( Total number of cards )
= ( 4/10 )
So
P(Draw a card 4 or less) = 0.4 = 40%
PB
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