Question

card marked with 3,4,5..........50 are placed in a box and mixed thoroughly. a card is drawn at random from the box .find the probability that the selected card bears a perfect square number

Answer 1

Total No.of cards= 50-2 = 48.
No. Of perfect squares=6
{4,9,16,25,36,49}
Therefore, Probability = 6/48=1/8

Answer 2

Answer:

The probability that the selected card bears a perfect square number is $\frac{1}{8}$

Step-by-step explanation:

Given : Card marked with 3,4,5..........50 are placed in a box and mixed thoroughly. A card is drawn at random from the box.

To find : The probability that the selected card bears a perfect square number?

Solution :

Card marked with 3,4,5..........50

Total number of cards = 50-2=48

Now,  

$\text{Probability}=\frac{\text{Favorable outcome}}{\text{Total number of outcome}}$

Favorable outcome(a perfect square number) :  4,9,16,25,36,49

So, Favorable outcome = 6

Total number of outcome = 48

$\text{Probability}=\frac{6}{48}$

$\text{Probability}=\frac{1}{8}$

Therefore, The probability that the selected card bears a perfect square number is $\frac{1}{8}$