Register
Alan has forgotten his 4-digit PIN code. He knows the first digit is 9 and the last digit is larger than 5. How many different sets of 4 digits could it be?
96.2k views
1 vote
Alan has forgotten his 4-digit PIN code.

He knows the first digit is 9 and the last digit is larger than 5.
How many different sets of 4 digits could it be?

User NeXau
by
3.2k points

1 Answer

6 votes

Answer:

  • 400 sets

Explanation:

  • First digit- 1 option (9)
  • Second digit - 10 options (0 to 9)
  • Third digit - 10 options (9 to 9)
  • Fourth digit - 4 options (6, 7, 8, 9)

Possible number of sets:

  • 1*10*10*4 = 400
User Peter Ambruzs
by
3.3k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

3.4m questions

4.3m answers

Other Questions

A study was completed in Florida. In southern Florida, the study involved 3,000 patients; 54% of them experienced flulike symptoms during the same month. The study had a margin of error of 1.8%. What does
Can someone help me plz I have to Turn 27/9 in simplest
Simplify: 10 ÷ [(5 + 2) − 5]
A survey of 539 adults aged 18-24 year olds was conducted in which they were asked what they did last Friday night. It found: 189 watched TV 163 hung out with friends 29 watched TV and ate pizza, but did
WHAT IS 33 TIMES 5 TELL ME THE ANWER
Link Copied!