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8 ... they are 20, 30, 40, etc on up to 90
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How many integers between 2000 and 3999 have a ones digit that is a prime number?
There are 800 such numbers.
How many numbers from 100-200 have the same digit in both the ones and tens place?
300
Find a two digit number that is the same as the ones place digit squared?
Hint, but not your answer: You know your answer has to be between 11 and 99. Furthermore, it has to be a square. One, two, and three when squared are still single digit numbers. Four squared is 16, which is not squaring the ones digit. Keep going...
What are two three digit numbers the tens digit is half the hundreds digit and the ones digit is half the tens digit?
421 and 842
How many 7- digit numbers are there?
8,999,999 of them.
How many numbers between 11 and 99 have 0 in their ones digit?
8 of them.
How many integers between 2000 and 3999 have a ones digit that is a prime number?
There are 800 such numbers.
How many whole numbers between 1 and 100 use 6 digit at lest ones?
19 of them do.
How many two digit numbers are there in which the tens digit is greater than the ones digit?
There are 45 of them.
How many positive prime numbers have a ones digit of 5?
Only one positive prime number has a 5 in the ones digit. That prime number is 5. All other numbers with a 5 in the ones digit are composite because they will be divisible by 5.
How many two digit numbers are there in which the tens digit is greater then the ones digit?
The answer depends on what the tens digit is greater than, and what the ones digit does then.
How many page numbers have the digit 2 in the ones place and are divisible by 8?
13
If you need a number between 500and600and your ones digit is 5and your tens digit is the difference between the ones and hundreds digit what number are you?
505
How many numbers from 100-200 have the same digit in both the ones and tens place?
300
What number between 500 and 600 would it be if the 'ones digit' is 5 and the 'tens digit' is the difference between the 'ones digit and hundreds digits'?
505
What is the ones digit in even numbers can be?
The ones digit in an even number can be one of: 0, 2, 4, 6, 8.
Find a two digit number that is the same as the ones place digit squared?
Hint, but not your answer: You know your answer has to be between 11 and 99. Furthermore, it has to be a square. One, two, and three when squared are still single digit numbers. Four squared is 16, which is not squaring the ones digit. Keep going...
