Grade 12Algebraeverything is in attachment please refer to it. I can’t type maths. thankyou for solving shreyas bulbule 6 Years agoGrade 12
Aditya Gupta6 Years agothe total no of permutations= 4! – 3! – 3! – 3! + 2! + 2! + 2! – 1= 24 – 18 + 6 – 1= 11feel free to ask any doubt :))