NCERT Exercise 6.3 Q2 - Permutations and Combinations
Question: How many four-digit numbers have no digit repeated?
Answer: 9·9·8·7 = 4536.
Full step-by-step NCERT solution with diagrams on Something by Zero.
Question: How many four-digit numbers have no digit repeated?
Answer: 9·9·8·7 = 4536.
Full step-by-step NCERT solution with diagrams on Something by Zero.