Category: Permutation and Combination

Question Number 135303 by bobhans last updated on 12/Mar/21 $$$$in how many ways can 10 people be seated in a round table if…

Question Number 135239 by benjo_mathlover last updated on 11/Mar/21 Terms of Service Privacy Policy Contact: info@tinkutara.com

Question Number 4105 by prakash jain last updated on 28/Dec/15 $$\mathrm{How}\mathrm{many}\mathrm{distinct}\mathrm{ways}\mathrm{are}\mathrm{there}\mathrm{for}$$$$\mathrm{a}\mathrm{knight}\mathrm{to}\mathrm{reach}\mathrm{from}\mathrm{bottom}\mathrm{left}\mathrm{corner}\mathrm{of}$$$$\mathrm{chessboard}\mathrm{to}\mathrm{top}\mathrm{right}\mathrm{corner}.$$$$\left(\mathrm{knight}\mathrm{going}\mathrm{from}\mathrm{square}\mathrm{a}1\mathrm{to}\mathrm{h}8\right).$$ Commented by Filup last updated on…

Question Number 69572 by Ajao yinka last updated on 25/Sep/19 Answered by mind is power last updated on 25/Sep/19 $${Let}\:{S}_{\mathrm{0}} =\underset{{k}=\mathrm{0}} {\overset{{n}} {\sum}}\left(_{\mathrm{5}{k}} ^{\mathrm{5}{n}} \right)\:\:\:,{S}_{\mathrm{1}}…

Question Number 3884 by Yozzii last updated on 23/Dec/15 $$Provethatthereare\left(\begin{array}{c}n+r-1\\ n-1\end{array}\right)$$$$waysofplacingridenticalobjects$$$$inncompartments,wheren>r.$$ Commented by RasheedSindhi last updated on 24/Dec/15 $${Let}\:{r}\:{objects}\:{are}\:{denoted}\:{as}\: \…