Question

2-3 15 cards numbered 1 2 3 4 ... 14 15 are
put in a box and mixed throughly
One ticket is drawn at randoms
from the box. Find probability that the number
o an even number
in a number less than 16
Ly a number which is a perfect square
a prime number
less than 40.​

Answer 1

Answer:

(i) 7/15 (ii) 2/3

Step-by-step explanation:

Total number of cards = 15

Find the total number of cards that are even:

Total number of cards that are even = 7

(They are 2, 4, 6, 8, 10, 12 and 14)

Find the probability of drawing a card that is even:

P(even) = 7/15

Find the total number of cards that are divisible by 2 or 3:

Total number of cards that are divisible by 2 or 3 = 10

(They are 2, 3, 4, 6, 8, 9, 10, 12, 14 and 15)

Find the probability of drawing a card that is divisible by 2 or 3:

P(Divisible by 2 or 3) = 10/15 = 2/3