Monday

December 22, 2014

December 22, 2014

Posted by **oscar** on Sunday, December 12, 2010 at 11:12am.

a) All 4 cards are red

b) 2 cards are red and two cards are black

c) At least one of the red cards is red.

d) All four cards are black

- statistics -
**PsyDAG**, Monday, December 13, 2010 at 3:12pma) There are 16 red-faced cards and 16 black.

First Card red = 16/32

Second card red = 15/31

Third Card red = 14/30

Fourth card red = 13/29

The probability of all occurring is found by multiplying the individual probabilities.

b) 16/32, 15/31, 16/30, 15/29 Again multiply.

c) Firgure probability of one red card, two red cards, three red cards, or four red cards. Remember the probability of the remaning cards being black in each case, except the last. Since you are interested in "either-or", add those four probabilities.

d) Same as a.

- statistics -
**Meli**, Thursday, February 2, 2012 at 6:16amThere are 6 red cards not 16 ( only face cards: 2 kings 2 queens and 2 jacks) and 16 black. 22 in total.

a) (6/22)*(5/21)*(4/20)*(3/19)

b) (16/22)*(15/21)*(6/20)*(5/19)

c) 1-((16/22)*(15/21)*(14/20)*(13/19))

d)(16/22)*(15/21)*(14/20)*(13/19))

- statistics -
**Bladimir**, Thursday, March 8, 2012 at 3:56amCARDS:red=6; black=16 ... total 22

a.(6 nCr 4)/(22 nCr 4) = .002

b.(6 nCr 2)(16 nCr 2)/(22 nCr 4)= .246

c.1-(.249) = .751 ... get d first

d.(16 nCr 22)/(22 nCr 4) = .249

**Answer this Question**

**Related Questions**

Math - Five red cards numbered 1,2,3,4,5 and two black cards both numbered 5 are...

Maths - Five red cards numbered 1,2,3,4,5 and two black cards both numbered 5 ...

statistics - Three cards are drawn from a deck without replacement. Find these ...

AP Statistics - A standard deck of cards consisting of 52 cards, 13 in each of 4...

probability and statistics - a set of 10 cards consists of 5 red cards and 5 ...

Statistics - Five cards are drawn at random without replacement from and ...

Intro to Statistics - Two cards are drawn at random from a standard 52-card deck...

Math - Need help on how to solve this problem.. Five cards are chosen from a ...

math - A standard deck of cards has had all the face cards (Jacks, queens, and ...

MATH - From a standard deck of cards, two cards are randomly drawn, one after ...