1. Tardigrade
  2. Question
  3. Mathematics
  4. Let P n denotes the number of ways in which three people can be selected out of ' n ' people sitting in a row, if no two of them are consecutive. If P n +1- P n =15 then the value of ' n ' is -

Q. Let denotes the number of ways in which three people can be selected out of ' ' people sitting in a row, if no two of them are consecutive. If then the value of ' ' is -

 394  162 Permutations and Combinations Report Error

Solution:

Correct answer is (b) 8