To find how many positive integers less than 100 are divisible by 3, 5, and 7, we first calculate their least common multiple (LCM). The LCM of 3, 5, and 7 is 105. Since 105 is greater than 100, there are no positive integers less than 100 that are divisible by all three numbers. Therefore, the answer is 0.
49
666 integers.
There are 44 positive integers less than 2,010 that have an odd number of factors.
Eight.
There are 544 positive integers less than 1,000 that are either divisible by two or by 11.
49
666 integers.
There are 44 positive integers less than 2,010 that have an odd number of factors.
Eight.
There are 130 positive integers less than 1,000 that are divisible by seven but not divisible by 11
There are 544 positive integers less than 1,000 that are either divisible by two or by 11.
6
One less than 10000.
The squares -- nine of them.
7 of them.
There are 80 such integers.
52