a jar contains 4 green marbles, 5 red marbles and 7 blue marbles. if two are selected randomly, what is the probability of getting: 1 green marble and 1 blue marble
2 red marbles
1 blue marble and 1 red marble
2 blue marbles

Question

a jar contains 4 green marbles, 5 red marbles and 7 blue marbles. if two are selected randomly, what is the probability of getting: 1 green marble and 1 blue marble
2 red marbles 
1 blue marble and 1 red marble 
2 blue marbles

anonymous · Answer

@terenzreignz

terenzreignz · Answer

okay.. one green and one blue... give it a go?

ivettef365 · Answer

with or without replacement

anonymous · Answer

i guess i replace them in this one it doesnt say not to so 4/16 and 7/16

terenzreignz · Answer

No guessing! Ask your teacher... please :/
For your own good :D

phi · Answer

it sounds like without replacement

anonymous · Answer

2/5

anonymous · Answer

sorry 2/16

anonymous · Answer

k hold on terenz

anonymous · Answer

without replacement so i have 4/16 and 7/15

terenzreignz · Answer

Multiply?  But I do suggest simplifying 4/16 first, before attempting such antics :D

anonymous · Answer

1/4

anonymous · Answer

lol 4 times seven is 28 and 15 times 16 is240 so i have 28/240 or if i simplify first 1/4 times 7/15 is 7/60

zarkon · Answer

@beanz 
are you just randomly writing numbers down?

anonymous · Answer

thats what i think

anonymous · Answer

@Zarkon i was simplifying it ,haha.