Yesterday my mother asked me 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 stamp, 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.
Luckily my mother had given me the exact money required to buy the stamps, £3.00 and the shopkeeper was able to give me the correct stamps.
Which stamps did I buy?
[Ref: ZOKI] © Kevin Stone
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