Solution:

The watchman had been sleeping on the job. Otherwise, he would not have been dreaming.

Solution:

I am a Postbox

Remove as many letters as possible, still postbox remains the same.

Solution:

N for Nine

Solution:

33 seconds

The train takes 30 seconds to travel 1 mile, plus 3 seconds for the complete train to pass any point, making a total of 33 seconds.

Solution:

Because the man is still living

Solution:

JUPITER

Solution:

1

(Only Me)

Solution:

There are 49 steps.

He hears the bird singing on step 33. He picks up the pebble on the 21st step and tosses it on the 22nd step. The remaining 27 steps are taken three at a time which is 9 pac

Solution:

The surgeon is the boy's mother

Solution:

This is simply the numbers 2^0,2^1,2^2 ... that is 1,2,4,8,16... So for making 1000 kg we need up to 1, 2, 4, 8, 16, 32, 64, 128, and 512