true blue anil
Virtually an octogenarian with precious little Math knowledge, probably trying to keep my combination of grey cells in order, by dabbling in probability and combinatorics.
26 In how many of the integer numbers between 0 and 10,000 does the digit 3 appear to the left of 4 Mar 14
23 A gambler with the devil's luck? Jun 23 '13
19 Six x’s has to be placed in the squares in the adjacent figure, such that each row contains at least one x. This can be done in Dec 17 '15
18 A king has n children, at least one of them is a daughter. What’s the probability that all of them are daughters? Oct 16 '15
6 confusion about permutation Dec 31 '15