The natural numbers, in normal usage, have only 9 digits: 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.
The natural numbers, in normal usage, have only 9 digits: 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.
The natural numbers, in normal usage, have only 9 digits: 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.
The natural numbers, in normal usage, have only 9 digits: 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.
There are no single-digit numbers divisible by 7000.
The ratio of the number of one-digit prime numbers to the number of one-digit composite numbers is one to one. The one-digit prime numbers are 2, 3, 5, and 7. The one-digit composite numbers are 4, 6, 8, and 9. Therefor, the ratio is 4:4, which simplifies to 1:1.
There are four of each.
Ten.
The set of rational numbers includes the set of natural numbers but they are not the same. All natural numbers are rational, not all rational numbers are natural.
The set of two-digit number
There is no THE two-digit natural number because there are many of them. 10, 11, 12, .. 99 are all 2-digit natural numbers.
99
8999 of them.
-99
The last digit in the product of the first 20 odd natural numbers can be determined by looking at the pattern of the units digit in the multiplication of consecutive odd numbers. The units digit of the product of consecutive odd numbers alternates between 1 and 5. Since there are 10 odd numbers between 1 and 19, and 20 is also an odd number, the last digit in the product of the first 20 odd natural numbers is 5.
The first 3 digit natural number is 100: 100 ÷ 4 = 25 → first 3 digit natural number divisible by 4 is 4 × 25 The last 3 digit natural number is 999: 999 ÷ 4 = 249 r 3 → last 3 digit natural number divisible by 4 is 4 × 249 → number of 3 digit natural numbers divisible by 4 is 249 - 25 + 1 = 225.
271 of the first 1000 natural numbers contain at least one digit 5. That is 27.1 % of them.
8
738 numbers
It is 0.
3 digit numbers are lessthan 4 digit numbers