Write down how many brothers and sisters you have*******
Write down how many uncles and aunts you have*******
add the number of uncles and aunts together*******
double it*******
add three*******
multiply by five*******
add the total number of brothers and sisters*******
take away fifteen*******
and the number on the right is how many brothers and sisters you have;the number on the left is how many uncles and aunts you have.
The Professor
Richard Cornish
BREATHE EASY = FRIENDSHIP
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Details from British Lung Foundation