Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Identify the 10 differences between the two given pictures.

Why is Saturday stronger than Monday?

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

Find the value of "?" in the ball picture Riddle below:

what one word does the below rebus identifies?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

Solve below popular number sequence
314 159 265 358 979 323 846 ?