Mathematics
A box contains 16 cards bearing numbers 1, 2, 3, 4, …, 15, 16 respectively. A card is drawn at random from the box. What is the probability that the number on the card is:
(i) an odd number?
(ii) a prime number?
(iii) a number divisible by 3?
(iv) a number not divisible by 4?
Related Questions
Two dice are thrown simultaneously. Find the probability of getting:
(i) 10 as the sum of two numbers that turn up
(ii) a doublet of even numbers
(iii) a total of at least 10
(iv) a multiple of 3 as the sum of two numbers that turn up
A box of 160 electric bulbs contains 12 defective bulbs. One bulb is taken out at random from the box. What is the probability that the bulb drawn is:
(i) defective?
(ii) non-defective?
Cards bearing numbers 2, 4, 6, 8, 10, 12, 14, 16, 18 and 20 are kept in a bag. A card is drawn at random from the bag. Find the probability of getting a card which is:
(i) a prime number
(ii) a number divisible by 4
(iii) a number that is a multiple of 6
(iv) an odd number
A box contains 15 balls bearing numbers 1, 2, 3, …, 14, 15 respectively. A ball is drawn at random from the box. Find the probability that the number on the ball is:
(i) an even number
(ii) a number divisible by 5
(iii) the number 6
(iv) a number lying between 8 and 12
(v) a number greater than 9
(vi) a number less than 6