4
The GCF of all the composite numbers under 100 is 1. For e.g 4 & 9 are composite numbers & their GCF is 1, so if we take other composite numbers along with 4 & 9 the GCF will be 1.
75 composite numbers are there till 100. 100-25=75. Composite numbers are numbers greater than 1 but not prime numbers.
So we eliminate prime numbers. Note that the number 1 is neither prime nor composite. We have left:4689101214151618202122242526272830323334353638394042444546484950515254555657586062636465666869707274757677788081828485868788909192939495969899100
74% is the percentage of composite numbers from 1 to 100?
Out of those 100 numbers, 21 of them are prime numbers, so the remaining (100 - 21) = 79 are composite.
The greatest composite number under 100 is 99. The greatest composite factor of 100 is 100.
99 is the largest composite number before 100.
4, 10, 20, 25, 50, 100 are the composite factors of 100.
102
There are 74 composite numbers.
75%
They are both composite numbers because they have more than two factors.