cars system - llws saudi

The access code for a cars security system consists of four digits?

Feb 19, 2011 by Ryan | Posted in Mathematics

the access code for a cars security system consists of four digits. the first digit cannot be 5 and the last digit must be even or zero.

how many different codes are avaliable?

can anybody help me

9*10*10*5 = 4500

Moise Gunen | Feb 19, 2011

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