Puzzle 197
Yesterday I was asked to buy some stamps.
Stamps, in the land of BrainBashers, are available in 2p, 7p, 10p, 15p and 20p denominations.
For three types of stamp, I was asked to buy five of each.
For the other two types of stamps, I was asked to buy six of each.
Unfortunately, I forgot which I was supposed to buy five of and which to buy six of.
I had been given £3.00, which just happened to be the exact money required, so the shopkeeper was able to work out what stamps I needed.
Which stamps did I buy?
Puzzle 198
If you write all of the numbers from 1 to 100 as words: ONE, TWO, THREE, …, ONE HUNDRED:
Which number is first alphabetically?
Which number is last alphabetically?
Which is the most common letter?
Which is the least common letter, and which number does it appear in?
Which letter is never used?
What is the total number of letters?
Which number is the longest?
How many numbers start with the letter T?
How many numbers contain the letter V?
100 is the first number to contain the letter N, what is the last number before 100 to contain a new letter for the first time?
If we carry on writing, when does the letter A first appear?
If we carry on writing, when does the letter B first appear?
Some questions have more than one answer, can you find them all?
Puzzle 199
What number comes next in this sequence:
16 · 21 · 26 · 26 · 12 · 5 · ?
Puzzle 200
I recently asked my friend Alex to buy me some ribbon for my child's bonnet.
Alex went to the haberdashery shop for the required length, but accidentally swapped the feet and inches.
When I measured the resulting ribbon, I only had 5/8 of the length I required.
How much ribbon did I originally ask for?
Remember that there are 12 inches in a foot.