Question

cards marked with numbers 1, 2,3.....20 are well shuffled and a card is drawn at random what is the probability that the no on the card is a prime no​

Answer 1

Answer:

the probability of getting a prime number is

$\frac{number \: of \: prime \: numbers}{total \: number \: of \: cards} \\ = \frac{8}{20} \\ = \frac{2}{5}$

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Answer 2

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