Adoor lock requires 3 different letters to be pressed in the correct order. a combination is to be made from the 3 letters abc. how many different combinations can there be?

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The two-way table shows the number of people whose hobbies are reading or solving puzzles and who either ride a motorcycle or don’t ride a motorcycle. among people whose hobby is reading, what is the relative frequency of not riding a motorcycle? express your answer as a decimal, and round it to the nearest hundredth if necessary. enter your answer in the box. reading solving puzzles ride a motorcycle 7 3 don't ride a motorcycle 5 9

What is always true about a positive integer raised to a negative odd power?