Question
How many composite numbers are there from 41 to
79?Solution
Total numbers between 41 to 79 = (79 - 41 + 1) = 39
Prime numbers between 41 to 79 = 41, 43, 47, 53, 59, 61, 67, 71, 73, 79 = 10 numbers
So, required count of composite numbers = (39 - 10) = 29
Hence, option c.
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