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Q: How many two digit counting nunbers are there?
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Related questions

How many two-digit counting numbers are not multiples of 10?

81


How many four digit counting numbers are not multiples of two?

4500 of them.


What is the largest two digit counting number?

99


How many two digit counting numbers are either multiples of 2 or multiples of 3?

60 numbers


How many two digit counting numbers are not multiples of 10?

There are 6,750 such numbers.


How many two-digit counting number that looks the same upside down as right-side up?

11 and 88


What is a two digit counting number?

All of the whole numbers from 10 to 99.


How many two digit counting numbers are not multiples of ten?

I believe there are 81. There are 9 after every multiple of 10, including 90.


How do you write two billion five hundred million three hundred thousand five in numbers in nunbers?

It is 2,500,300,005 in numbers. Not quite sure what nunbers are, though ;)


How many two-digit counting numbers are greater than 70 or a multiple of ten?

- There are an infinite number of "counting numbers" that are greater than 70. - There are also an infinite number of "counting number" that are multiples of 10. So.... since you used an "OR" statement, this mean how many number are true for both statements above. That would be: AN INFINITE NUMBER of counting numbers. In fact, if you had said "AND", it still would be an infinite number: 80, 90, 100, ... and so on FOREVER. * * * * * The above answer has interpreted the questions as "two-digit counting numbers greater than 70" OR "a multiple of ten". Apart from the fact that there are not an infinite number of two-digit counting numbers greater than 70, the answer would be correct. But the answer could be interpreted as "two digit counting numbers" that are "greater than 70" OR "a multiple of ten". In that case, the first set is {71, 72, ... 99} and the second is {10, 20, 30, ... 90} with an intersection set consisting of {80 and 90} So there are 29 + 9 - 2 = 36 such number.


What are the first two common multiples for the nunbers 5 and 15?

15 and 30


How many 3 digit counting numbers are not multiples of 5?

There are 720 of them. The three digit counting numbers are 100-999. All multiples of 5 have their last digit as 0 or 5. There are 9 possible numbers {1-9} for the first digit, There are 10 possible numbers {0-9} for each of the first digits, There are 8 possible numbers {1-4, 6-9} for each of the first two digits, Making 9 x 10 x 8 = 720 possible 3 digit counting numbers not multiples of 5.