a bag contains 8 balls. 5 are black 3 are white. a ball is taken out of the bag at random and not replaced. another ball is take
n out of the bag at random. what is the probability that both of the balls are the same colour?
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A rational number is a number which can be expressed as a fraction whose numerator and denominator are both integers and whose denominator is not equal to zero. Rational numbers include all integers, fractions, mixed numbers, and some decimal numbers.
Note : All terminating and repeating decimal numbers are rational numbers because those numbers can be expressed as a fraction. On the other hand, a non repeating number and non terminating decimal, like square root of 2, is an irrational number.
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