??
Puzzle 9
Find three common nine letter words that can be formed on an upside-down calculator.
Assuming you have one of the old-fashioned calculators that can show 9 digits!
What is the longest word which could be formed?
?
Puzzle 10
Which word does not belong with the others:
dgo act ehors ceffio elrttu ekmnoy
??
Puzzle 11
What is the smallest positive integer, which …
… when multiplied by 7 gives a number consisting of only 6's?