A box contains cards numbered 6 to 50. A card is . . .

Question : A box contains cards numbered 6 to 50. A card is drawn at random from the box. The probability that the drawn card has a number which is a perfect square is 

a) 1/45

b) 2/15

c) 1/9

d) 4/45

Doubt by Saumya

Solution : 

Total number of cards {6,7,8, . . .50}
= 50-6+1 = 45

Number of cards having a number which is a perfect square {9, 16, 25, 36, 49}
= 5

P(Number on the card is a perfect square) 
= (No. of favorable outcomes) / (No. of possible outcomes)
= 5/45
= 1/9 

Hence, c) would be the correct option.