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wolfgang
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Some problems and puzzles really bother me because I don't know what the symbols mean.

Can someone explain please?

1*2 means 1 multiplied by 2

1^2 means ?????

1! means ?????

Since the only thing I understand is 1*2 can you see how I have no chance in solving many problems/ understanding the solutions.

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Some problems and puzzles really bother me because I don't know what the symbols mean.

Can someone explain please?

1*2 means 1 multiplied by 2

1^2 means ?????

1! means ?????

Since the only thing I understand is 1*2 can you see how I have no chance in solving many problems/ understanding the solutions.

a^b refers to a to the power of b ( a multiplied by a b times).

a! means a factorial and is the product of all integer, positive numbers up until and including a.

a!= 1*2*3*..... *(a-1)*a.

In probability theory, a! is the number of permutations for a number of a objects.

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