Social Security Numbers A social security number consists of nine digits. How many different social security numbers are possible if repetition of digits is permitted?

There is a possibility of 10 numbers in each place. There are 9 places in a social security number (123-456-789)… 10^9=10x10x10x10x10x10x10x10x10=1 billion =1 billion combinations is this right????

Question

Social Security Numbers A social security number consists of nine digits. How many different social security numbers are possible if repetition of digits is permitted?

There is a possibility of 10 numbers in each place. There are 9 places in a social security number (123-456-789)… 10^9=10x10x10x10x10x10x10x10x10=1 billion =1 billion combinations is this right????

andijo76 · Answer

the second part is my solution

akshay_budhkar · Answer

Can u have zero as ur first digit?

anonymous · Answer

Your thought as long as your answer too, are completely right.. :)

akshay_budhkar · Answer

if zero can be ur first digit as well, your answer and thought are correct