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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 different telephone numbers can be formed from a seven digit number if the first and last digit cannot be zero?
The number of possibilities is 9 x 10 x 10 x 10 x 10 x 10 x 9 = 8,100,000.
The total number of five digit numbers that can be be formed digits 12345 is?
It is 120 if the digits cannot be repeated.
What is the number of 5 digit telephone numbers having atleast one of their digits repeated?
5 digit telephone numbers having at least one of their digits repeated is = total possible 5 digit telephone numbers - 5 digit telephone numbers without any digit being repeated. =(10*10*10*10*10)-(10*9*8*7*6) =100000-30240 =69760
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 different telephone numbers can be formed from a seven digit number if the first and last digit cannot be zero?
The number of possibilities is 9 x 10 x 10 x 10 x 10 x 10 x 9 = 8,100,000.
How many 3 digit numbers can be formed from the digits 12345 if the digits cannot be repeated?
1 set
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 seven-digit telephone numbers are possible if the first two digits cannot be ones or zeros?
That makes:* 8 options for the first digit * 8 options for second digit * 10 options for the third digit * ... etc. Just multiply all the numbers together.
What is the number of 5 digit telephone numbers having atleast one of their digits repeated?
5 digit telephone numbers having at least one of their digits repeated is = total possible 5 digit telephone numbers - 5 digit telephone numbers without any digit being repeated. =(10*10*10*10*10)-(10*9*8*7*6) =100000-30240 =69760
How many digits are there in Turkish telephone numbers?
Telephone numbers in Turkey consist of the telephone country code +90, followed by a three-digit area code and a 7-digit subscriber number.
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 3 digit codes can be formed if the numbers cannot start with 0 or 1?
8*10*10=800
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.
