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8*10*10=800

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Q: How many 3 digit codes can be formed if the numbers cannot start with 0 or 1?
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Related questions

How many two-digit numbers in base ten can be formed if the tens digit cannot be 0 and no digit can be repeated?

81


How many four-digit numbers can be formed if the leading digit cannot be zero?

There are 9 x 10 x 10 x 10, or 9000 four-digit number that can be formed if the leading digit cannot be zero.


How many 7 digit telephone numbers can be formed the first digit cannot be zero?

9,000,000 if there are no other requirements.


How many three-digit area codes are possible if the first digit cannot be a 0?

There are 900 possible three-digit numbers not beginning with 0. (Note, however, that this question does not accurately describe the restrictions on numbers that can be used as area codes.)


How many 3 digit numbers can be formed from the digits 12345 if the digits cannot be repeated?

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The total number of five digit numbers that can be be formed digits 12345 is?

It is 120 if the digits cannot be repeated.


How many 7 digit phone numbers can be formed if the first digit cannot be 0 or 1 and any digit can be repeated?

Using your rule - essentially, it's the simplified sum of 9999999-2000000 which is a total of 7999999 numbers !


How many 7-digit phone numbers can be formed if the first digit cannot be 0 or 1 and no number can be repeated?

There are 8*9*8*7*6*5*4 = 483840 numbers.


How many 7-digit phone numbers can be formed if the first digit cannot be 0 and any digit can be repeated?

7


How many 5-digit numbers can be formed using the digits 0 1 2 3 4 5 6 7 and 8 if the first digit cannot be 0 or 1?

There are 7*94 = 45927 such numbers.


How many 4 digit numbers formed?

9999


How many different 3-digit codes can be created if no digit can be repeated?

Any 3 from 10 in any order = 10 x 9 x 8 = 720It depends on what other restrictions you place on the numbers. For example, in North America (country code +1 = USA, Canada, etc.), area codes cannot have 0 or 1 as the first digit, and cannot have 9 as the second digit.