Ex.15.1 Q11 Probability Solution - NCERT Maths Class 10

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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 . What is the probability that the fish taken out is a male fish?

  

Text Solution

   

What is known?

A tank containing 5 male fish and 8 female fish

What is unknown?

The probability that the fish taken out is a male fish?

Rasoning:

This question can be solved easily by using the formula

Probability of an event \(\begin{align}=\frac{\text{Number of possible outcomes}}{\text{Total no of favourable outcomes}}\end{align}\)

Steps:

No of male fish \(=5\)
No of female fish \(=8\)
Total no of fishes \(5+8=13\)

Probability that the fish taken out is a male fish \(\begin{align}=\frac{\text{No of male fish}}{\text{Total no of fishes}}\end{align}\)

Probability that the fish taken out is a male fish \(\begin{align}=\frac{5}{13}\end{align}\)