A bag contains 100 identical marble stones numbered from 1 to 100. What is the probability of drawing a marble having number divisible by 4 and 5 both?
2/40
Numbers divisible by 4 and 5 both = 20, 40, 60, 80, 100.
Hence, Probability = Numbe of favourable outcomesTotal number of outcomes = 5100= 120