Find a​ 3-by-3 magic square using the numbers3, 6, 9, 12, 15, 18, 21, 24, and 27

Compute P9,2. (Enter an exact number.)

How many negative divisors has the integer 90?

what are all of the factors of the number 35?

in how many ways can the ten digits be written in a row if the even and odd digits have to alternate?

Sudoku is a puzzle consisting of spuares arranged in 9 ros and 9 columns.  the 81 spares are furter divided into nine 3x3 spare boxes.  the object is to fill in the spuares with numerals 1 through 9 so that each colum, row, and box contains all nine numbers.  however, there is a requirement that each number appear only once in any row, column, or box.  each puzzle already has numbers in some of the spuares.  would it be appropriate to use a random number table to select a digit for each blank spuare?  explain

Find the LCM 12 and 16

A bicycle wheel rotates 400 times per minute. If the rider removes his feet from the pedals, the wheel will start to slow down. Each minute, it will rotate only as many times as in the preceding minute. How many 4 times will the wheel rotate in the eighth minute after the rider's feet are removed from the pedals? The wheel will rotate about times in the eighth minute. (Round to the nearest integer as needed.)

Find the highest power of 17 that divides 1500!