Additional Mathematics 0606 / Permutations and combinations / 3.433.43: Find nnn from a combinations identity0606/11/O/N/22 — Question 10 · 3 marksMark as done · Save for later · Show all solutionsGiven that 65×nC5=2(n−1) n+1C665\times{}^{n}C_{5} = 2(n - 1)\,{}^{n + 1}C_{6}65×nC5=2(n−1)n+1C6, find the value of nnn.[3]▸ Answer▸ Official mark scheme← 3.6: 5-character passwords and a combinations equation3.42: Team selection with three brothers together →
