SOLUTION: A bag contains n cards, each having one of the number (1,2,3,...,n) written on it. If all numbers are used, the probability of drawing a card with a number less than or equal to 4

Question 831303: A bag contains n cards, each having one of the number (1,2,3,...,n) written on it. If all numbers are used, the probability of drawing a card with a number less than or equal to 4 is 1/4. How many cards are in the bag?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
P()=
Numbers less than or equal to 4 are {1,2,3,4}
P(n<4)=(Cards numbered less than or equal to 4}/{Total number of cards}

RELATED QUESTIONS
A bag contains "n"cards each having one of the numbers 1,2,3,4,.....n written on it. If... (answered by stanbon)

the numbers 1-12 are written on cards and placed in a bag. Find each probability a.... (answered by Boreal)

A box contains five slips of paper. Each slip has one of the numbers 4,6,7,8,or 9 written (answered by ewatrrr)

I need some help on a couple of problems. Could some one walk me through step by step on (answered by richard1234)

The numbers 1 through 50 are written with red marker on slips of paper while the numbers... (answered by ikleyn)

Numbers 1 thru 10 are written on individual cards and placed in a bag. If you reach in... (answered by mathmate)

Could you explain everything that you do? Numbers 1-10 are written on cards and placed... (answered by stanbon)

I need help if someone can help me with just these three problems and please explain them (answered by stanbon)

1. If you dealt 4 cards from shuffled deck of 52 cards, Find the probability that all 4... (answered by benplaksa)