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Find the number of odd positive integers of the number 456.(a) 54(b) 27(c) 16(d) 8This question was addressed to me in semester exam.The above asked question is from Counting topic in division Counting of Discrete Mathematics

Answer»

Correct answer is (d) 8

The best explanation: To find the NUMBER of ODD FACTORS (which includes 1), we can exclude any power of 2 and do the same. So, for 456, we have (3 + 1)(1 + 1) = 8 odd positive factors.



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