Question

B. what is the probability of selecting a red marble, setting it aside, and then selecting a blue marble? show your work
C. are the answers to parts (A) and (B) the same?

Answer 1

@paki

Answer 2

little wait, i have problem in my internet connection.... :-(

Answer 3

firstly there are 4 red marbles and total 16 marbels is'nt it

Answer 4

so prob of selecting red is=4/116=1/4

Answer 5

and prob of selecting a blue is=7/16
do u get it

Answer 6

yea and then you multiply and get 7/67

Answer 7

so it that the anwser for b

Answer 8

so prob of selecting red then a blue is=prob of selecting red*prob selecting blue
=(4/16)*(7/16)

Answer 9

so the answer would be 7/64

Answer 10

now ur selecting a red marble, setting it aside, and then selecting a blue marble is'nt it?

Answer 11

yea

Answer 12

so prob of selecting red=4/16
now one of the red is removed
now prob of selecting blue=(blue marbels)/(all marbels except the specific red which has been removed)=7/15
it is okay??

Answer 13

yea i got it thanks

Answer 14

no its not ends here

Answer 15

now ur required prob=(4/16)*(7/15)=7/60