Puzzle 721
Starting with COLD, change one letter at a time until you have the word WARM.
Each change leaves the other letters in their original places and must result in a common word.
What is the minimum number of steps required to achieve this change?
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Hint
The second word is CORD.
Answer
COLD, CORD, WORD, WARD, WARM
or
COLD, CORD, WORD, WORM, WARM
or
COLD, CORD, CARD, WARD, WARM.
Puzzle 723
Which is larger:
loaves in a dozen baker's dozen
points in the highest snooker break
Puzzle Copyright © Kevin Stone
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Hint
There are 13 loaves in a baker's dozen.
Answer
Loaves in a dozen baker's dozen.
Reasoning
A baker's dozen is 13, so a dozen baker's dozen is:
12 x 13 = 156 loaves
There are 15 red balls in snooker, and each of these can be followed by the black ball, and then the colours in order gives:
15 x (1 + 7) + 2 + 3 + 4 + 5 + 6 + 7 = 147 points
This can rise to 155 if the break follows a foul.
