Sonalika42 wrote:

when we solve the above it should be (4/10)*(3/9)*(6/8)*(5/7)=1/14 which is not even present in the option.Plzz explain.

Hi,

you assume it is blue blue green green, but there are 5 other possible orders:

bgbg

bggb

gbgb

ggbb

gbbg

You can observe, though, that the probabilities of these orders appearing are equal, hence you can arrive at the correct answer by multiplying 1/14 by 6.

Hence option C is correct.

PS: Please use the tags

_________________

Sandy

If you found this post useful, please let me know by pressing the Kudos Button

Try our free Online GRE Test