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Puzzle 197
By changing the second letter of each word below, you can make another valid word.
Can you change each word such that the second letters will reveal an eleven-letter word when read downwards?
Therefore, what now reads 'vokahliuppw' will become a real word.
oval
post
skin
malt
when
slab
miss
fund
aped
sped
sway
Puzzle 198
Alex and Billie Stone have three daughters and each daughter has two brothers.
How many children do Alex and Billie Stone have?
Puzzle 199
I am a 10-letter word.
My 9, 6, 1, 2 is something a swimmer might do.
My 5, 4, 4, 3 is not that hot really.
My 7, 4, 3, 2 is a long piece of wood.
My 7, 6, 8, 5, 10 is a small part of something.
My 3, 4, 1, 10 is a deep affection.
My 7, 6, 8 is something you can eat.
My whole is an old form of transport.
What am I?
Puzzle 200
A Proof That 2 = 1. Let A = B:
A = B
multiply by A on both sides:
A x A = A x B
subtract B x B from both sides:
A x A − B x B = A x B − B x B
factorise:
(A + B)(A − B) = B(A − B)
divide by (A − B) on both sides:
(A + B) = B
replace A with B:
B + B = B
factorise:
2B = B
divide by B on both sides:
2 = 1
Where lies the flaw in the logic?