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標題:
maths問題
發問:
1.write 215 as a product ot its prime factors. 2.use index notation to write 248 as a product of its prime factors. 3.use index notation to write 324 as a product of its prime factors. 更新: 4.Subtract 44 from the sum of all the factors of 24. 5.It is know that the H.C.F. of a given number and 63 is 9.Find two possible values of the given number.
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最佳解答:
1 215 = 5 * 43 2 248 = 2 * 2 * 2 * 31 = 2^3 * 31 3 324 = 2 * 2 * 3 * 3 * 3 * 3 = 2^2 * 3^4 4 1 + 2 + 3 + 4 + 6 + 8 + 12 + 24 - 44 = 16 5 63 = 3 * 3 * 7 So, the two possible numbers are 9 and 126
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