Algebra 2
posted by Dena .
In a quiz program, 3 questions on sprots, 3 questions on general knowledge, and 4 questions on science are printed separately on 10 cards and placed upside down. John is asked to select 2 cards at random. What is the probability of Joohn selecting 2 questions on science?

Algebra 2 
Reiny
Number of ways to select any two of the 10
= C(10,2) = 45
number of ways to select 2 out of the science
= C(4,2) = 6
prob of that event = 6/45 = 2/15
Respond to this Question
Similar Questions

In Science Plant Quiz
I am in Grade3 looking for Plants Quiz Questions and Answers, like objective type Questions need, please let me know the link where I can find ? 
ALGEBRA
A student is asked to answer 7 out of 13 questions on an exam. In how many ways can she select the questions to be answered? 
ALGEBRA
A student is asked to answer 7 out of 11 questions on an exam. In how many ways can she select the questions to be answered? 
Math Important!
Ozzie's Mother bought an assortment of greeting cards while she was at the bookstore. She bought twice as many birthday cards as anniversary cards. She bought 2 fewer anniversary cards than general greetings cards, but 2 more anniversary … 
stats
1. Suppose that you are taking a quiz of 6 multiple choice questions (the instructor chose the questions randomly), each question having 6 possible responses. You did not study at all for the quiz and will randomly guess the correct … 
Maths
Five cards are lettered A B C D R.Three cards are chosen at random, one after the other, without replacement and are placed in the order.what is the probability that the cards spell the word BED 
Maths
Five cards are lettered A B C D E.Three cards are chosen at random, one after the other, without replacement and are placed in the order.what is the probability that the cards spell the word BED 
math
A standard deck of cards has 52 cards in it. The cards are divided into 4 suits or 13 cards each.If one draws two cards at random from the deck of cards what is the probability that they are of the same suit ? 
math
A standard deck of cards has 52 cards in it. The cards are divided into 4 suits or 13 cards each.If one draws two cards at random from the deck of cards what is the probability that they are of the same suit ? 
Math
A card is taken at random from ordinary pack of cards.It is then replaced. Another card is now taken at random from the pack of cards. Work out the probability of the following. a.both cards are the picture cards(jacks,queens or kings) …