Solved How many permutations of the letters ABCDEFGH - Chegg How many permutations of the letters ABCDEFGH contain: a) the string ED? b) the string CDE? c) the strings BA and FGH? d) the strings AB, DE, and GH? e) the strings CAB and BED? f) the strings BCA and ABF? Your solution’s ready to go! Our expert help has broken down your problem into an easy-to-learn solution you can count on
combinatorics - Find the number of $8$-digit numbers $ABCDEFGH$ with . . . Find the number of $8$ -digit numbers $ABCDEFGH$ with distinct digits from $1$ to $8$ such that $A > B > C > D$ and $D < E < F < G < H$ I found this problem very interesting and have an idea to solve it, but my method is very long
discrete mathematics - Can someone please explain the reasoning for . . . How many permutations of the letters ABCDEFGH contain the string ABC ? Solution: Because the letters ABC must occur as a block, we can find the answer by finding the number of permutations of six objects, namely, the block ABC and the individual letters D, E, F , G, and H
geometry - Cube distortion - Mathematics Stack Exchange A unit cube ABCDEFGH has rods pinned at its 8 vertices It is distorted by bringing together opposite vertices A and G ( initial distance AG $=\sqrt3 $ now reduced) thereby increasing angle between spread out edges at A and G from a right angle $90^ {\circ}$ to $\theta\le 120^ {\circ } $ None of the 6 quadrilaterals (skewed rhombuses) are in a