self Maths Puzzle Logical Reasoning Number Series

Q. Three digits are chosen at random from 1,2,3,4,5,6,7,8 and 9 without repeating any digit. What is the probability that their product is odd?

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self Other Question

A man has four sons .there are 6 proposals of marriage for his sons. In how many ways can they select a proposal for their marriages,such that none of them marry with more than one girl.

Option
a) 180
b) 270
c) 360
d) none of these
Our chess champion is a champion. But one problem is threatening to check-mate him. The problem is : starting from the corner cell of a normal chess board, how many other different cells can a knight visit in exactly five moves?