There are only two numbers that can be multiplied to make 15. These numbers are 3 and 5. This is true because 3*5 = 15
1, 3, 5, 15
You know that sum of the first n whole numbers is n(n+1)/2. ( it is the same as the first n natural numbers since the zero does not add anything) So lets say you want the sum of all the whole numbers between 3 and 10. ( I made it easy to illustrate the idea.) The sum of the whole numbers between 0 and 3 is 3(4)/2=6 The sum of the whole numbers between 0 and 10 is 10(11)/2=55 So the sum of the whole numbers between 3 and 10 is the (sum of the whole number between 0 and 10) -(sum of whole numbers between 0 and 3) which is 55-6=49 So in general, for whole numbers m and n with m
1 and 3 are the only positive whole numbers that can do all of that.
12 and 3.
12
To any set that contains it! It belongs to {-15}, or {sqrt(2), -15, pi, -3/7}, or all whole numbers between -43 and 53, or multiples of 5, or composite numbers, or integers, or rational numbers, or real numbers, or complex numbers, etc.
There are only two numbers that can be multiplied to make 15. These numbers are 3 and 5. This is true because 3*5 = 15
1, 3, 5, 15
You know that sum of the first n whole numbers is n(n+1)/2. ( it is the same as the first n natural numbers since the zero does not add anything) So lets say you want the sum of all the whole numbers between 3 and 10. ( I made it easy to illustrate the idea.) The sum of the whole numbers between 0 and 3 is 3(4)/2=6 The sum of the whole numbers between 0 and 10 is 10(11)/2=55 So the sum of the whole numbers between 3 and 10 is the (sum of the whole number between 0 and 10) -(sum of whole numbers between 0 and 3) which is 55-6=49 So in general, for whole numbers m and n with m
3 can't lie between consecutive whole numbers. It lies between 2 and 4, which are consecutive even numbers.
There are 900 three-digit whole numbers between 1 and 1000
4, 5, 6, 7, 8, 9, 10, 11, 12, 13 and 14.
The prime numbers between 10 and 15 are 11 and 13.
First five whole numbers are: 0 1 2 3 4
43 isn't between consecutive whole numbers. If that's 4/3, it's between 1 and 2.
1 and 3 are the only positive whole numbers that can do all of that.