cards marked with numbers 1 to 25 are placed in a box and placed thoroughly and one card is drawn at random from the box. what is the probability that the number on the card is-a) a prime number b) a multiple of 3 or 5
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Answer:
a) 10/25, or 2/5
b) 10/25 or 2/5
Step-by-step explanation:
a) There are 10 prime numbers between 1 and 25
b) There are 7 multiples of 3 and 4 multiples of 5 between 1 and 25, but 15 comes twice, so we only take once
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