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How many social security numbers are possible if the first two digits cannot be 0?
Wiki User
∙ 11y ago
All Social Security Numbers are 9 digits. Since each digit has ten possibilities [1,2,3..9.0], the number of combinations using all 10 number possibilities is -
10 X 10 X 10 X 10 X 10 X 10 X 10 X 10 X 10 = 1,000,000,000.
If be restrict the first 2 digits to 1 through 9 then its
9 X 9 X 10 X 10 X 10 X 10 X 10 X 10 X 10 = 810,000,000
Wiki User
∙ 11y ago
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How many four digits numbers can be formed using 0123456789?
Assuming that the first digit of the 4 digit number cannot be 0, then there are 9 possible digits for the first of the four. Also assuming that each digit does not need to be unique, then the next three digits of the four can have 10 possible for each. That results in 9x10x10x10 = 9000 possible 4 digit numbers. If, however, you can not use the same number twice in completing the 4 digit number, and the first digit cannot be 0, then the result is 9x9x8x7 = 4536 possible 4 digit numbers. If the 4 digit number can start with 0, then there are 10,000 possible 4 digit numbers. If the 4 digit number can start with 0, and you cannot use any number twice, then the result is 10x9x8x7 = 5040 possilbe 4 digit numbers.
What is the number of possible 9 digit social security numbers if the digits may be repeated?
If the digits may be repeated, and if the number may begin with a zero, then it's just all ofthe counting numbers up to 999,999,999.If it can't begin with a zero, then you have to throw away the first 99,999,999 and there canonly be 900,000,000.
What is the probability of three digit numbers without repeated digits with numbers 0123456?
It is possible to create a 3-digit number, without repeated digits so the probability is 1.
How many even four digit numbers can be made using 02356 where the first digit is cannot be 0 and no digits are repeated?
Assuming that 2356 is a different number to 2365, then: 1st digit can be one of four digits (2356) For each of these 4 first digits, there are 3 of those digits, plus the zero, meaning 4 possible digits for the 2nd digit For each of those first two digits, there is a choice of 3 digits for the 3rd digit For each of those first 3 digits, there is a choice of 2 digits for the 4tj digit. Thus there are 4 x 4 x 3 x 2 = 96 different possible 4 digit numbers that do not stat with 0 FM the digits 02356.
How many 5 numbers combinations can you make from 1 2 3 4 5?
If digits can be reused, then 5x5x5x5x5 = 3125. If digits cannot be reused, then 5x4x3x2x1 = 120.
What is the number of possible 9 digit social security numbers if the digits can't be repeated?
9x8x7x6x5x4x3x2x1 or 9! which equals 362880 possible combinations if no digits are repeated
How many ssn number combinations?
Interesting.Social Security numbers all have the form: (3 digits) - (2 digits) - (4 digits).That's 9 digits altogether. If you ignore the dashes, you get: xxx,xxx,xxx .With 9 places, there are 1 billion possible different numbers.
Is 784874 a Social Security Number?
No. Social Security numbers have nine digits.
How many four digits numbers can be formed using 0123456789?
Assuming that the first digit of the 4 digit number cannot be 0, then there are 9 possible digits for the first of the four. Also assuming that each digit does not need to be unique, then the next three digits of the four can have 10 possible for each. That results in 9x10x10x10 = 9000 possible 4 digit numbers. If, however, you can not use the same number twice in completing the 4 digit number, and the first digit cannot be 0, then the result is 9x9x8x7 = 4536 possible 4 digit numbers. If the 4 digit number can start with 0, then there are 10,000 possible 4 digit numbers. If the 4 digit number can start with 0, and you cannot use any number twice, then the result is 10x9x8x7 = 5040 possilbe 4 digit numbers.
What is Visa security code?
On the back of your card there should be a strip with numbers on it. The security code is the last three digits. :)
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 too get the answer to the security questions given?
The security question - is something only the legitimate user should know the answer to ! The safest password to use should be at least 10 digits (letters and/or numbers) long. There are 3,656,158,440,062,976 possible combinations for a 10-digit password using letters and/or numbers !
How many different numbers can be formed with the digits 345?
Assuming you mean permutations of three digits, then the set of numbers that can be made with these digits is: 345 354 435 453 534 543 There are six possible permutations of three numbers.
2 digit numbers have the same digits the sum of the digits of each number is 10 and the difference between the two numbers is 36?
This cannot be answered. This will have to be written to where it can be understood.
How many 6 digit numbers can be formed form the digits 123456 if no digits can be repeated?
6*5*4*3*2*1=720 possible numbers
How many numbers are in a security code for a credit card?
16 digits in a credit card number and 3 for the security code on the back of the card.
