A five digit number contains 1,2,3,4,5 without repetition.The probability that number is divisble by
1)4
2)12
3)24
A bag contains 6 red and 3 white balls .Four balls are drawn one by one and not replaced.The probablity that they are alternatively of different colors
Six different balls are put in 3 different boxes,no box remaining empty.The probability of putting balls in the boxes in equal numbers is
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1 Answers
11. 2.4!/5!=2/5 ?
2. 6/9 * 3/8 * 5/7 * 2/6 + 3/9 * 6/8 * 2/7 * 5/6 = 5/42 ?