Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Look at the picture and find out which square is not linked with any of the other squares.

What does man love more than life, and hate more than death or mortal strife; that which satisfied men want; the poor have, and the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

People make me, save me, change me, raise me. What am I?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

What word does this rebus represent?

meta meta
meta meta

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

0 0 0 = 6
1 1 1 = 6
2 2 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6

You can use any mathematical symbols in the space provided to make all above algebraic expressions true.

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable