Now build cross on up and down face with up and down colors. If we have 12 bad edges then we do turn F and B and Case 1 one time. If we have 10 bad edges then we do Case 2 two times and Case 1 one time. If we have 8 bad edges then we do Case 2 two times. If we have 6 bad edges then we do Case 2 one time and Case 1 one time. If we have 4 bad edges, we have to put all bad edges into front face but without F, F' and B, B' turns and then make F or F' turn. Now put the other bad edge on the place of that one good edge in the F face and perform another F turn. If we have 2 bad edges then we have to put one bad edge in front face, perform F turn and now we have 1 good edge and 3 bad edges on the front face. If we have 4 good edges on the F face, with F or F' turn we will transform 4 good edges into 4 bad edges and the other way around. Often, 6 bad edges can be oriented more efficiently by placing 3 bad edges into F/B using, performing an F/B quarter turn, and then using the 4 + approach to correctly orient the remaining 4 bad edges. Repeat until there are no more bad edges. Place four bad edges on F/B using and then do a F/B quarter turn. Repeat with Orienting 4+ bad edges approach. Place one bad edge on F/B using and then do a F/B quarter turn. * If the side sticker has U/D color, it's a bad edge. If the sticker has F/B color, look at the sticker on the other side of the edge.If the sticker has L/R color it's a bad edge.Looking at the edges on the U face, D face, F face of the E-slice, and B face of the E-slice:
#8 permute 3 how to#
How to hold the cube (for easier understanding of examples): Put corners with down color in right place (Solve D Corners) Put middle layer edges in the right place (Solve E-Slice)Ħ. Build up and down cross (Permute U and D edges)Ĥ. The following steps describe an approach suited for beginners, more advanced users might combine steps 4 and 5 and for 7 and 8 steps use a Fridrich type last layer and do PLL.Ģ. 8 Put corners with down color in right place.6 Put middle layer edges on right place.There are 3,326,400 ways to order the sheet of stickers. If we have a set of n objects and we want to choose r objects from the set in order, we write P\left(n,r\right). Before we learn the formula, let’s look at two common notations for permutations. Fortunately, we can solve these problems using a formula. The number of permutations of n distinct objects can always be found by n!.įinding the Number of Permutations of n Distinct Objects Using a Formulaįor some permutation problems, it is inconvenient to use the Multiplication Principle because there are so many numbers to multiply. Note that in part c, we found there were 9! ways for 9 people to line up. There are 362,880 possible permutations for the swimmers to line up. There are 9 choices for the first spot, then 8 for the second, 7 for the third, 6 for the fourth, and so on until only 1 person remains for the last spot. Draw lines for describing each place in the photo.Multiply to find that there are 56 ways for the swimmers to place if Ariel wins first. There are 8 remaining options for second place, and then 7 remaining options for third place. We know Ariel must win first place, so there is only 1 option for first place. Multiply to find that there are 504 ways for the swimmers to place. Once first and second place have been won, there are 7 remaining options for third place. Once someone has won first place, there are 8 remaining options for second place.
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