Question

3 person abc work independently on a problem
​

Answer 1

Answer:

1st person = a

2nd person = b

3rd person = c

Hope it helps you!

Answer 2

Answer:

Correct option is

B

5

2

Given events are independent

∴ Required probability is

(1−

3

1

)(1−

4

1

)(1−

5

1

)=

3

2

×

4

3

×

5

4

=

5

2