6) How many different 5-digits zip codes can we have? A) 100,000 B) 90,000 C) 81,000...

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6) How many different 5-digits zip codes can we have?
A) 100,000 B) 90,000 C) 81,000 D) 80,000
7) How many different 5-digits zip codes can we have with nozero as the first digit?
A) 100,000 B) 90,000 C) 81,000 D) 80,000
8) How many different 5-digits zip codes can we have with nozero as the first and last digit?
A) 100,000 B) 90,000 C) 81,000 D) 80,000
9) A security code consists of 4 parts, two digits first (zerois allowed) and 2 letters after (not case sensitive) How manydifferent security codes are possible? A) 77,600 B) 67,600 C)76,700 D) 76,600
10) A security code consists of 4 parts, two digit first (butthe first digit can not be zero) and 2 letters after (not casesensitive but letter â€œoâ€ is not allowed for both letters) How manydifferent security codes are possible?
A) 56,250 B) 50,265 C) 56,625 D) 50,625
11) In how many ways Joe can dress up, if he has 6 shirts, 7pants, and 5 pair of shoes?
A) 18 B) 180 C) 210 D) 201 11

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4.5 Ratings (954 Votes)

6 Each digit can occur in 10 ways So the number of different5digits zip codes is 7 The first digit can occur in 9 ways Other digits can occurin 10 ways So See Answer

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