If we separate and label the clues, and label the bungalows #1, #2, #3, #4 from left to right we can see that:

a. Mrs Scott's bungalow is somewhere to the left of the wooden one.
b. The third one along is brick.
c. Mrs Umbrella owns a straw bungalow
d. Mr Tinsley does not live at either end.
e. Mr Tinsley lives somewhere to the right of the glass bungalow.
f. Mr Wilshaw lives in the fourth bungalow
g. The first bungalow is not made from straw.

By (g) #1 isn't made from straw, and by (b) nor is #3. By (f) Mr Wilshaw lives in #4 therefore by (c) #2 must be straw, and Mrs Umbrella lives there.

Therefore by (d) Mr Tinsley must live in #3, which, by (b) is the brick bungalow.

By (a) #4 must be wooden (otherwise Mrs Scott couldn't be to its left) and by (f) Mr Wilshaw lives there.

Which leaves Mrs Scott, living in #1, the glass bungalow. QED.

Puzzle 18

These words have had their vowels removed. Can you replace the vowels to make some vegetables:

Digit3 can only be 3, 6 or 9 (as it's 3 x Digit2).

Digit2 can only be 1, 2 or 3.

Digit1 can only be 2, 4 or 6.

But, since Digit4 is two thirds of Digit1, Digit1 must be 6. Making Digit4 4 and making Digit3 9. Making Digit2 3.

Giving 6394. QED.

Puzzle 20

Using the BrainTracker grid below, how many words can you find? Each word must contain the central H and no letter can be used twice, however, the letters do not have to be connected. Proper nouns are not allowed, however, plurals are. Can you find the nine letter word?