Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

A Club organizes a Running Race, and John, Jacob, Minda, and Tony participated.

The results are as follows

John beats Jacob
Minda beats Toni
Toni beats John

Who came first in the race?

I am not a bull but I have horns.
I am not an ass but I have a pack saddle.
Wherever I go, I leave silver behind me.

Who am I?

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

Which fur should we be getting from the Lion?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

Which is the smallest number that you can write using all the vowels exactly once?