self Maths Puzzle

A popular mathematical pastime:

Use exactly four 4's to form every integer from 0 to 50, using only the operators +, -, x, /, () (brackets) x2 (square), and ! (factorial).

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6 = 4*.4+4.4
7 = 44/4-4
8 = 4+4.4-.4
9 = 4/4+4+4
10 = 44/4.4
12 years agoHelpfull: Yes(1) No(0)

self Other Question

Using 8 exactly eight times make a 1000.

You can use any mathematical symbols There is one four-digit whole number n, such that the last four digits of n2 are in fact the original number n.