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Does integers contain the number zero?
Yes
Why zero is not a natural number?
Zero is not a natural number because the definition of a natural number is the set of positive integers that does not contain zero.
How many 4 digit numbers can you make that contain 5?
There is a clever but tricky way to solve this. If we have to find the number of 4-digit integers that contains at least one 5, we can also find the number of all the 4-digit integers and the number of integers that do not contain any 5's and subtract it from the first number. This is called complementary counting.So, first of all, we must find the number of 4-digit numbers there are. There are 9000 of them.Now, we find the number of 4-digit integers without 5's. By thinking a little bit, we see the first digit must be from 0~9 excluding 5. That is a total of 9 numbers. This is the same for the next three digits. Therefore, there are 94 = 6561 4-digit numbers without a 5.Finally, we can subtract. 9000 - 6561 = 2439
Why is 0.8 recurring a rational number?
It can be expressed as the ratio of two integers: 8/9.
What is the number of positive integers less than 6000 which are divisible by 5 but not by 9?
533
Does integers contain the number zero?
Yes
What are all the numbers sets that contain the number -8?
integers and rational numbers
How many integers from 1 to 100000 contain the digit 6 at least once?
9*10*10*10*10 - 8*9*9*9*9
Why zero is not a natural number?
Zero is not a natural number because the definition of a natural number is the set of positive integers that does not contain zero.
Is 45 a triangular number?
Yes, sum of integers 1 - 9.
What are the two consecutive integers of the square root number 90?
9 and 10
Is -9 is an integer?
s.. 9 is an integer but 9.a23 or any other decimal value isn't integerYes.
What are the definitions of integers?
Integers are whole numbers that do not contain fractions or decimals
How many 4 digit numbers can you make that contain 5?
There is a clever but tricky way to solve this. If we have to find the number of 4-digit integers that contains at least one 5, we can also find the number of all the 4-digit integers and the number of integers that do not contain any 5's and subtract it from the first number. This is called complementary counting.So, first of all, we must find the number of 4-digit numbers there are. There are 9000 of them.Now, we find the number of 4-digit integers without 5's. By thinking a little bit, we see the first digit must be from 0~9 excluding 5. That is a total of 9 numbers. This is the same for the next three digits. Therefore, there are 94 = 6561 4-digit numbers without a 5.Finally, we can subtract. 9000 - 6561 = 2439
Square of a rational number is rational?
Sure. Let's take an example with numbers instead of variables. 8/9 is a rational number - the ratio of two integers. If you square it, you get (8/9)2 = 82/92 = 64/81; that is, if you square each integer, you get an integer again. Therefore, the resulting number is rational again - a number that can be expressed as the ratio of two integers. Replace with any other integers; you will still have a ratio of integers if you square it.
Why is 0.8 recurring a rational number?
It can be expressed as the ratio of two integers: 8/9.
What is the number of positive integers less than 6000 which are divisible by 5 but not by 9?
533
