Question

there are 10 marbles in a bag : 3 are blue ,7 are red . what is the probability of that a blue marble will be picked?​

Answer 1

Answer:

3/10=1/5

Step-by-step explanation:

1/57/10 3/10. 1/3

Answer 2

Answer:

51/100

Step-by-step explanation:

step 1: draw your probability tree diagram

step 2:label the outcomes ; for example BB for the blue marble and RR for the red marble

step 3: multiply the numerator and the denominator with each other

step 4: add the outcomes together for getting the probability required.

[HINT: USE THE PROBABILITY TREE DIAGRAM FOR WITH REPLACEMENTS OF THE OUTCOMES]