?
Puzzle 1
Can you find a word that means perimeter …
… and by adding a letter A another word is formed that means a lodger?
?
Puzzle 2
In the following line, cross out nine letters such that the remaining letters spell a well-known animal.
e n i l n e e p l e t h t a e n r s t
??
Puzzle 4
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?