Two cards are selected at random from 10 eah
numbered 1 to 10. Find the probability that the sum is
odd if two cards are

1 thought on “Two cards are selected at random from 10 eah<br />numbered 1 to 10. Find the probability that the sum is<br />odd if two cards are”

1. Answer:

   The number of ways of choosing one odd and one even number is

   5

   C

   1

   ×

   5

   C

   1

   =5×5=25

   Total number of ways of choosing 2 cards out of 10=

   10

   C

   2

   =45

   Thus, probability =25/45=5/9

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