Check sibling questions

Ex 6.1,3 - Chapter 6 Class 11 Permutations and Combinations

Last updated at May 29, 2023 by

Ex 7.1, 3 - How many 4-letter code can be formed using first - Fundamental principal of counting

 

Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class

Book a free demo

Transcript

Ex 6.1, 3 How many 4-letter code can be formed using the first 10 letters of the English alphabet, if no letter can be repeated? No. of letters = 10 Code is of the form Total number of possible 4-letter code = 10 × 9 × 8 × 7 = 5040 Hence 5040 ways 4 letter code can be formed

Ask a doubt
Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.