Cards marked with numbers 1 to 20 are placed in the box and mixed thoroughly.
One card is drawn at random from the box. What is the probability of getting a
number which is prime?
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Answer:
Step-by-step explanation:
Number of cards=>1-20
=>20 cards.
Prime numbers=>2,3,5,7,11,13,17 and 19.
=>8.
So probability of a prime number =>8/20
=>4/10
=>2/5.
So the probability of getting a prime number is 2/5 or 0.4.
HOPE IT HELPS.
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