Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Something Extraordinary happened on May 6th 19778 at 12:34am what was that?

I am sure no one can have two things for dinner. what are they?

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

Find the next number in the sequence

5 12 24 36 ?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

You have to put a letter on the following to make it a meaningful word. The only challenge is that you can't use 'E'.

S E Q U E N C _

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Here is a Swiss Cross. You have to make two straight cuts in the figure so that it is divided into four congruent pieces. Also, you should be able to join these pieces into a square then. Can you accept this challenge?

How many times do a clock's hands overlap in a day ?