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A person was born in 1940. Today is his 18th birthday. How is that possible?

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Born in feb 29 in 1940
then after 72 years he celebrates 18th b'day in 2012
10 years agoHelpfull: Yes(4) No(0)

the year when he was born was a leap year which come after every 4yrs
10 years agoHelpfull: Yes(0) No(0)

A website Other Question

My Dad has a miniature Pyramid of Egypt. It is 5 inches in height. Dad was invited to display it at an exhibition. Dad felt it was too small and decided to build a scaled-up model of the Pyramid out of material whose density is (1 / 9) times the density of the material used for the miniature. He did a "back-of-the-envelope" calculation to check whether the model would be big enough.

If the mass (or weight) of the miniature and the scaled-up model are to be the same, how many inches in height will be the scaled-up Pyramid? Give your answer to two places of decimal. Complete the following series:

1, 4, 5, 6, 7, 9, 11, __?