Question

2. Ajar contains 40 marbles. Some are red & The Others are green. The
probability of drawing a green ball is 2/5. Find the number of red ball in the jar.
& probability of red ball.​

Answer 1

Answer:

40-2/5

Step-by-step explanation:

=39.6

So, 39.6/40=0.99

Answer 2

Answer:

p(e)=pro. of green marbles

p(e)=2/5

p(not e)=1-p(e)

P(not e)=1-0.4

=0.6

p(not e)=6/10

terefore the pro. 0f red marbles in a jar is 6/10 .

p(e)=2/5=16/40

p(not e)=6/10=24/40

there fore no. of red marbles is 24 and no. of green marble is 16

24 + 16= 40

sorry i cannot find the perfect method to find no. of red marbles.