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Puzzle 317
How many words can you find …
… that contain two consecutive U's?
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Puzzle 318
Can you find three consecutive prime numbers …
… that equal 409,457 when multiplied together?
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Puzzle 319
What number comes next in this sequence:
7 · 8 · 5 · 5 · 3 · 4 · 4 · ?
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Puzzle 320
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?