Solution:

I have written 'your exact weight' on the paper.

Solution:

1

As stated
1=6 => 6=1

Solution:

only 6

Solution:

Step1: Fill up the 3 liter bucket first , Pour it into the five liter bucket.

Step2: Fill up the 3 liter bucket again, and fill up the rest of the 5 liter bucket and you should have 1 liter left over in the 3 liter bucket.

Solution:

49Th Day

Solution:

2/13

There 4 kings & 4 jacks, which implies there are 8 cards that can satisfy the above problem.
=>8/52
=> 2/13

Solution:

2

Solution:

Only one(dead one)

other flew away :--)

Solution:

4 socks

Although there are many socks in the draw, there are only three colors. So, four socks are enough to match one pair.

Solution:

Nine (eight sons have same one sister ,so 8+1=9)