Question

probability
Cards bearing numbers 1,2,3,.....,35 are kept in a bag. A card is drawn at random from the bag. Find the probability of getting a card bearing:
a) a prime number less than 18
b) a number divisible by 3 and 5

Answer 1

prime no. less than 18- 2,3,5,7,11,13,17
P(prime no. less than 18)=7/35=1/5
no. divisible by 3&5- 15,30
P(no. divisible by 3&5)=2/35

Answer 2

Answer-:
a).A={2,3,5,7,11,13,17}
n(A)=7/35
p(A)=5
B).B={5,6,9,10,12,15,18,}
n(B)=7/35
p(B)=5
i think this will help you.....
please mark me as brilliant