[2,7]
There are 90 two-digit numbers in the set of natural numbers. These numbers range from 10 to 99, inclusive. To find the total, you can subtract the smallest two-digit number (10) from the largest (99) and add one: (99 - 10 + 1 = 90).
11
Exactly 50
It would appear that these are a selection of numbers from Z, the set of integers - written without any separators.
Some examples of sets of real numbers include: The set of positive integers: {1, 2, 3, 4, ...} The set of rational numbers: {1/2, -3/4, 5/6, ...} The set of whole numbers: {..., -2, -1, 0, 1, 2, ...} The set of natural numbers: {0, 1, 2, 3, 4, ...} The set of irrational numbers: {√2, π, e, ...}
[2,7] the bracket means inclusive but if it said exclusive it would have parenthesis replacing the brackets.
There are 90 two-digit numbers in the set of natural numbers. These numbers range from 10 to 99, inclusive. To find the total, you can subtract the smallest two-digit number (10) from the largest (99) and add one: (99 - 10 + 1 = 90).
The set of even numbers is the set of all the numbers that are divisible by 2 (or multiples of 2).
All of the odd numbers between 11 and 99 inclusive are two digit numbers that are not multiples of 2. There are 45 of them.
11
Seven of them.
Exactly 50
There are 48/2 + 1 = 25 odd numbers in 1 to 49, inclusive.
It would appear that these are a selection of numbers from Z, the set of integers - written without any separators.
Some examples of sets of real numbers include: The set of positive integers: {1, 2, 3, 4, ...} The set of rational numbers: {1/2, -3/4, 5/6, ...} The set of whole numbers: {..., -2, -1, 0, 1, 2, ...} The set of natural numbers: {0, 1, 2, 3, 4, ...} The set of irrational numbers: {√2, π, e, ...}
between 1 and 600 inclusive there are:300 numbers divisible by 2200 numbers divisible by 3100 numbers divisible by both 2 and 3400 numbers divisible by 2 or 3.
To find how many numbers between 1 and 100 inclusive are divisible by 2, we can identify the even numbers in that range. The even numbers from 1 to 100 are 2, 4, 6, ..., 100. This forms an arithmetic sequence where the first term is 2, the last term is 100, and the common difference is 2. There are 50 even numbers (2, 4, 6, ..., 100), so there are 50 numbers between 1 and 100 that are divisible by 2.