The digits 1,2,3,4,5,6 and 7 are used to form a password for a computer program. No digit may be repeated. How many five digit passwords can you create if they must begin with an even number? (3 marks)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.7: Distinguishable Permutations And Combinations
Problem 23E
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I need 2 question step by step
b) How many different signals can you send using 1, 2, or 3 flags if the same colour many only be
used once. (3 marks)
(2) The digits 1,2,3,4,5,6 and 7 are used to form a password for a computer program. No digit may be
repeated. How many five digit passwords can you create if they must begin with an even number?
(3 marks)
(3) How many permutations are there of the letters of the word "RETIREMENT"? (2 marks)
Sofahon
RETREMENT"
3くミ×チ×6×5×4×3×2×1
2x2 x2
A, AG A
- 45 360
Transcribed Image Text:b) How many different signals can you send using 1, 2, or 3 flags if the same colour many only be used once. (3 marks) (2) The digits 1,2,3,4,5,6 and 7 are used to form a password for a computer program. No digit may be repeated. How many five digit passwords can you create if they must begin with an even number? (3 marks) (3) How many permutations are there of the letters of the word "RETIREMENT"? (2 marks) Sofahon RETREMENT" 3くミ×チ×6×5×4×3×2×1 2x2 x2 A, AG A - 45 360
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