Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

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 girl says this to her best friend: “I was born in 1955, and I celebrated my 17th birthday last weekend.” Her best friend thinks she’s lying, but she’s actually correct. How is that possible?

A blonde put eyeliner on her head. Why?

What jumps when it walks and sits when it stands?