A card is drawn at random from a pack of 100 cards numbered 1 to 100. The probability of drawing a number which is a square is
110
Clearly, the sample space is given by
S = \{1, 2, 3, 4, 5, ....., 97, 98, 99, 100\}
∴n(S)=100
Let E = event of getting a square.
Then E = \{1, 4, 9, 16, 25, 36, 49, 64, 81, 100\}
∴n(E)=10
Hence. required probability =n(E)n(S)
=10100=110