Maths can behave with surprising features.
The results they produced can be awesome.
With simple addition and multiplication, sometimes we see shocking maths answer.
But all can be explained if our principles to mathematics is concrete.
Below presents the interesting mathematics operations and their results:
1) (4 x 9) + (4 + 9) = 49
2) (5 x 9) + (5 + 9) = 59
See that by using the same digit, with the above maths operation, we can get the answer without thinking! But do note that one of the digit has to be 9.
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