Question

Gopi buys a fish from a shop for his aquarium. The shopkeeper takes out one fish at random from a tank containing 5 male fish and 8 female fish (see figure). What is the probability that the fish taken out is a male fish?

• A. $\frac{5}{13}$
• B. $\frac{6}{13}$
• C. $\frac{5}{12}$
• D. $\frac{8}{15}$

Answer 1

The correct option is A

$\frac{5}{13}$

Total number of fish in the tank = 5 + 8 = 13
$\therefore$ Total number of elementary events = 13
There are 5 male fish in the tank.
$\therefore$ Favourable number of elementary events = 5
Hence, P (taking out a male fish) = $\frac{5}{13}$