Jack

10-10-2013, 11:19 AM

How many passwords can be created from 5 digits?

(A) 10^5

(B) 50

(C) 5!

(D) ^{10}C_{5}

(A) 10^5

(B) 50

(C) 5!

(D) ^{10}C_{5}

View Full Version : sat math counting question

Jack

10-10-2013, 11:19 AM

How many passwords can be created from 5 digits?

(A) 10^5

(B) 50

(C) 5!

(D) ^{10}C_{5}

(A) 10^5

(B) 50

(C) 5!

(D) ^{10}C_{5}

miranda

10-10-2013, 11:21 AM

Every digit of the password can be chosen with 10 different ways. Therefore the number of possible passwords are 10*10*10*10*10=10^5.

The correct answer is (A)

The correct answer is (A)

Jack

10-10-2013, 11:21 AM

thanks!!:)

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