Answer:
2÷15
Step-by-step
the total number of balls in the in the bag is 10
Then
the probability of drawing a red ball on the first draw is 4/10.
…………………………………………………………
Now , if the first ball drawn is not replaced.
Then
the probability of drawing a red ball on the Second draw is 3/9.
……………………………………………
Conclusion:
the probability that two balls drawn at random from the bag will be red if the first ball drawn is not replaced is :
(4÷10)×(3÷9)
= (2÷5)×(1÷3)
= 2÷15
= 0.133333333333
