Number 194.

240m

A train passes the platform in 36 seconds.
The train passes a man in 20 seconds.
The speed of the train is 54km/h.
Speed = Distance/Time
To convert km/h into m/s we multiply by 5/18
Convert speed into m/s
=> 54 x 5/18 = 15 m/s
The length of the train is:
=> 15 × 20 = 300 meter
Distance covered in 36 seconds
=> 36 x 15 = 540 meter
The length of the platform is:
=> 540 - 300 = 240 meter

The length of the platform is 240 meters

Jerry and John first, then John will come back then Kim with Jade then Jerry will come back and get John.

Over 10 million dollars!

They both are a 1000 lbs and weigh the same.

The man takes the sheep first because the sheep will not eat cabbage. The man then goes to the other side of the creek. He then brings the fox to the other side. He takes the sheep back to the other side. After taking the sheep, he will take the cabbage with him. After taking the cabbage to the other side, he goes to the original side, he takes the sheep with him to the other side.

Repeat.
(The Catch) Every time the other person says repeat, you keep repeating,"Pete and Repeat sat on a bridge Pete jumped off,who was left?

0123456789...

One, after that it is not empty.

Tree.

6 because 10 divided by 2 is 5 then minus one from friend and add one from me and I have 6.

11cm

Perimeter of triangle is given by formula;P = X + Y + Z
Substitutes the values
P=X+Y+Z
25=10+4+Z
Rearrange Z+14=25
Z=25-14 Z=11
Therefore the length of third side is 11cm.