15.1k views
2 votes
Cards numbered 1 through 18 are mixed up and placed in a bag . modisha chooses one of the cards without looking . what is the probability that modisha chooses a card with a number less than 10 ?

1 Answer

4 votes
Cards numbered 1 through 18 are mixed up and placed in a bag:

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18

*Note that here are 18 cards in total.

Modisha chooses one of the cards without looking. What is the probability that Modisha chooses a card with a number less than 10?

(1), (2), (3), (4), (5), (6), (7), (8), (9), 10, 11, 12, 13, 14, 15, 16, 17, 18

*Note that out of 18 cards, only 9 of them are less than the value of 10.

This means that there is a 9/18 chance of Modisha choosing a card that is less than 10 blindfolded.

It turns out that 9 is half of 18, therefore there is a 1/2 chance (50:50) that Modisha will choose a card that is less than 10 blindfolded.
User Danpe
by
8.3k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories