The abc Arithmetics
by Sam Loyd
As it is known 2 multiplied by 2 produces the same result as 2 added to 2.
It is 4 in both cases - just as shown in the lower left corner of the
Can you think of another pair of numbers (a and b) which
when multiplied together give the same result when they are added
together? In other words it should be such a and b numbers that the two
equations shown in the illustration are true, i.e.
a + b = c and
a x b = c.
Note, that the number a may be different from the number
b in the pair. And, of course, you are allowed to choose from the
decimal numbers as well.
Actually there are many such pairs and some formula can be derived for
this. Can you think of it too?