The code for a safe is of the form PPPQQQQ where P is any number from 0 to 9 and Q represents the letters of the alphabet. How many codes are possible for each of the following cases? Note that the digits and letters of the alphabet can be repeated.
A. 874261140
B. 537856330
C. 549872700
D. 456976000
Answer:D
The code for a safe is of the form PPPQQQQ where P is any number from 0 to 9 and Q represents the letters of the alphabet. How many codes are possible for each of the following cases? Note that the digits and letters of the alphabet can be repeated.
A. 874261140
 B. 537856330
 C. 549872700
 D. 456976000

Explanation: 103 × 264 = 456976000 possible codes are formed for the safe with the alphanumeric digits.
