Question
How many 4-letter code can be formed using the first 10 letters of the English alphabet, if no letter can be repeated?
Step 1
The first position can be filled in 10 ways, as there are 10 letters to choose from. Show more…
Show all steps
Your feedback will help us improve your experience
Prashansha Kaushik and 66 other Algebra educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
How many four-letter code words are possible from the first six letters of the alphabet, with no letter repeated? Allowing letters to repeat?
Sequences, Induction, and Probability
The Multiplication Principle, Permutations, and Combinations
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD