Which is the rope you never skip with?

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

Our product and our sum always give the same answer. Who are we?

During which month do people sleep the least?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

A clock loses 10 minutes each hour. If the clock is set correctly at noon, what time is it when it reads 3 PM?

A Car driver was heading down a street in Washington. He went right past a stop sign without stopping, he turned left where there was a 'no left turn' sign and he went the wrong way on a one-way street. Then he went on the right side of the road past a cop car. Still, he didn't break any traffic laws. Why not?

A father's child, a mother's child, yet no one's son.

Who am I?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?