3digits are chossenn at random from 123456789 without repetation of wordswhat is the probability that their product is odd

In a group of 5 families, every family has a certain number of children, such that the number of children forms an arthmetic progression with a common difference of one, starting with two children in the first family. despite the objection of their parents every child in a family has three times as many pets to look after as the number of offspring in the family. what is the total number of pets in the entire group of five families.

6. in the adjoining figure, measure the lengths of the sidesof the triangle abc and verify: (i) ab + bc > ac when ab=2.6cm bc=3.9cm ac=4cm​

Suppose there are n no. of person in a party .they areshaking their hands randomly. prove that the no. of person who are handshaking in odd times is even​