5
1,2,3,4,5,6,7,8
4
The natural numbers are the counting numbers Thus the set m of those counting numbers less than 5 is: m = {1, 2, 3, 4}
{3,6,9,12,15,18,21,24}
5
Four of them.
1,2,3,4,5,6,7,8
The natural numbers are the counting numbers. Therefore, the natural numbers less than 31 are the numbers from 1 to 30.
Addition is combining the value of the numbers. Ex... 3+4=7. This means 3 units from zero added to 4 units from zero equals 7 units from zero. When you add you always get a higher number... basically. I said basically because sometimes you can add a negative number. Ex. 3 + -4 = -1. This means 3 units greater than zero added to 4 units less than zero equal 1 units less than zero. Negative numbers are numbers less than zero. Positive numbers are greater than zero.
None of them. All counting numbers are either odd or even.
None. All counting numbers are even or odd.
8, 11, and 20.
2, 3, 5, and 7 are prime numbers for one digit numbers. 1 is NOT a prime number.
4
Yes. Natural numbers are counting numbers, equal to or greater than 0. The only ways a product can be less than its multiplicands is when multiplying fractions by fractions or multiplying a positive number by a negative number.
Any number that is not a fraction, percent, decimal, or negative is a whole number. Counting numbers are whole numbers. Counting numbers are 1, 2, 3, 4, 5,... Zero is a whole number. So yes, every integer greater then negative one is a whole number, and so is -1 and every integer less than -1.