Question

A box contains 100 bolts, two-fifthh are
rusted. One bolt is dracen at random
from the box. Find the probability that
it is:
a) a rusted bolt
b) not a rusted bolt​

Answer 1

Answer:

a)2/5

Step-by-step explanation:

(2/5)×100=40

therefore probability is

40/100=2/5

b)3/5

because 1-(2/5)=3/5

pls mark brainliest

Answer 2

NO. OF RUSTED BOLTS

=100×2/5=40

n(s)=100

n(a)=40

n(b)=100-40=60

1] p(a)=n(a)÷n(s)

=40/100

=2/5

2] p(b)=n(b)÷n(s)

=60/100

=3/5