Sunday

October 26, 2014

October 26, 2014

Posted by **Ian** on Monday, April 15, 2013 at 3:33am.

Note: You do not place the first marble back into the bag

- Maths -
**Reiny**, Monday, April 15, 2013 at 8:13amcould be RR, GG, YY, or BB

prob RR = (10/40)(9/39) = 3/52

the others are the same calculation

so prob = 4(3/52) = 9/52

now doing the a and b stuff

a=9 , b=52

a+b = 61

- Maths -
**Sahil**, Saturday, April 20, 2013 at 10:27amit is the wrong answer

- Maths -
**Tom**, Wednesday, October 1, 2014 at 12:55amThe first one can be any color. But after you draw it there will be only 9 of that color left.

So the odds of drawing the same color again are 9/39.

**Answer this Question**

**Related Questions**

Math - A bag contains nine red marbles, four green marbles, three blue marbles, ...

Math - There are 150 green marbles and 100 yellow marbles in a bag that contains...

Math - One bag contains 5 red marbles, 4 blue marbles, and 3 yellow marbles, and...

Math - A bag contains 10 marbles: 1 red, 2 blue, 3 green, and 4 yellow. I reach ...

algebra2/ Trigonometry - A bag contains 24 green marbles, 22 blue marbles, 14 ...

math - sally has a bag with red,blue, and green marbles. She has twice as many ...

Math - a bag contains 3 red marbles, 5 blue marbles, 2 yellow marbles, and 2 ...

Discrete Math - A bag contains 5 red marbles, 4 yellow marbles, 3 green marbles...

MATH - You have a bag of marbles containing 13 red marbles, 8 green marbles, 7 ...

Math Help? Check my answers. - 1. A spinner is divided into 10 equal sections ...