There are 25 of them.
Five of them.
6 positive integers. 0,1,2,3,4 & 5
666 integers.
Of the 729 numbers that satisfy the requirement of positive integers, 104 are divisible by 7.
All the numerals are integers (positive integers)
There are 25 of them.
Five of them.
6 positive integers. 0,1,2,3,4 & 5
The positive integers up to 4 are: 1, 2, 3, and 4. This is a total of four positive integers.
The answer depends on how many negative integers you divide by.
666 integers.
Of the 729 numbers that satisfy the requirement of positive integers, 104 are divisible by 7.
90
49
There are 80 positive integers from 1 to 80.Half of them are even, the other half are odd.So there are 40 even integers from 1 to 80.2, 4, 6, and 8 have only 1 digit.All the rest have 2 digits.So the answer is (40 - 4) = 36 .However, as the question asked "less than 80" we can not include 80 and so the answer is 35.
Given any positive odd integer x the number of positive even integers less than x is given by (x-1)/2.