Question

Two candidates a and b appeared for the analytics test. The probability of a qualifying is 1/7 and that of b is 2/9. Find the probability that at least one of them is selected.

Answer 1

Answer:

23/63

Step-by-step explanation:

I think it's the correct one

Answer 2

The required probability is $\dfrac{23}{63}$

Step-by-step explanation:

Since we have given that

Probability that a qualified = $\dfrac{1}{7}$

Probability that b qualified = $\dfrac{2}{9}$

So, the probability that at least one of them is selected is given by

$\dfrac{1}{7}+\dfrac{2}{9}\\\\=\dfrac{9+14}{63}\\\\=\dfrac{23}{63}$

Hence, the required probability is $\dfrac{23}{63}$

# learn more:

A and B are two candidates seeking admission in a college. The probability that A is selected is 0.7 and the probability that exactly one of them is selected is 0.6 . Find the probability that B is selected.

https://brainly.in/question/2707375