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(! ) three cylinders have a height of 8 cm. cylinder 1 has a radius of 1 cm. cylinder 2 has a radius of 2 cm. cylinder 3 has a radius of 3 cm. find the volume of each cylinder

Find two consexutive odd integers such that the sum of their square is 650

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?