During which month do people sleep the least?

What makes this number unique: 8,549,176,320?

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

There are hundred red gems and hundred blue gems. The blue gems are priceless while the red gems equal wastage. You have two sacks one labeled Heads and the other Tails. You have to distribute the gems as you want in the two sacks. Then a coin will be flipped and you will be asked to pick up a gem randomly from the corresponding sacks.

How will you distribute the gems between the sacks so that the odds of picking a Blue gem are maximum?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

A landlord calls both of his sons and tells them that their horses will now decide who will transfer the inheritance. He tells them to race along the land till the end and the one whose horse will be slower will win and be the heir to all the property.

Both of them keep wandering for days but to no result. Then they ask a wise man regarding it. The man advises them on the matter after which they jump on the horses and race as fast as they can till the end. Why did they do it?

What did the wise man say?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Which part of London exists in France as well ?