What does a man do only once in his lifetime, but women do once a year after they are 29?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

Can you find the dog hidden in a group of pandas?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?

What question can you never answer yes to?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.