Brain Teasers and Puzzles 

Workings

Hint
What could cause the egg to break, and how can we prevent this?

Answer
If we drop the egg from somewhere above 30 feet high, the egg can fall 30 feet and be caught, while still above the floor.

Workings

Hint
The answer isn't very large at all.

Answer
There are four boys and six girls in the family.

If there were B boys, and G girls we know that Daniel has twice as many sisters as brothers, so 2 x (b - 1) = g.

And his sister, Jessica, has one more sister than she has brothers, so g - 1 = b + 1.
    2(b - 1) = g       [1]
       g - 1 = b + 1   [2]

Using [1] in [2] gives:

2(b - 1) - 1 = b + 1

Expanding the bracket gives:

  2b - 2 - 1 = b + 1

Simplifying the left hand side gives:

     2b - 3  = b + 1

Add 3 to each side gives:

          2b = b + 4

Subtract b from both sides gives:

           b = 4

Using b = 4 in [1] gives:

    2(4 - 1) = g

           6 = g

Workings

Hint
Some of the possible words end in IST.

Answer
Choose from: anthologist, pathologist, phonologist, protagonist.

Workings

Hint
Try it once, and then try it again.

Answer
You get 202 each time!