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How many 7-digit phone numbers can be formed if the first digit cannot be 0 or 1 and no number can be repeated?
Oh, dude, let me break it down for you. So, since the first digit can't be 0 or 1, we have 8 options for that first digit. After that, we have 9 options for the next digit, then 8 for the next, and so on. So, it's like 8 x 9 x 8 x 7 x 6 x 5 x 4. Crunch those numbers and you get the total number of 7-digit phone numbers that can be formed without repeating any digits.
What else can I help you with?
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 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 7 digit phone numbers can be formed if all the numbers can be repeated?
823543
How many 4 digit numbers can be formed from the digits 12345 if any of the digits cannot be repeated?
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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 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 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 7 digit phone numbers can be formed if all the numbers can be repeated?
823543
How many 4 digit numbers can be formed from the digits 12345 if any of the digits cannot be repeated?
jfnvjsdkncjfdknvlakdjvbsadoihfcb shfvbcnsHLfc bnshJCbvjhbeshuyvbe b hdfbgehfgbwahucgbvfer fguy gyfuby uyr
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 four-digit numbers can be formed with the numbers 1234 if no digits can be repeated?
4*3*2*1 = 24
How many 3 digit numbers can be formed from 806 if anoy of the digits can be repeated?
3x3x3=27
How many 5 digit numbers can be formed from the digits 012 if any of the digits can be repeated?
500
How many 4 digit numbers can be formed from the digits 7341 if none of the digits can be repeated?
24
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 6 digits numbers can be formed from the digit 01357 and 9 which are divisible by 10 and no digit is repeated?
There are 5! = 120 such numbers.
