Use 123456 to form a six digit ABCDEF without repetition, so that ABC, BCD, CDE and def are multiples of 4, 5, 6 and 11, respectively

Use 123456 to form a six digit ABCDEF without repetition, so that ABC, BCD, CDE and def are multiples of 4, 5, 6 and 11, respectively

It's 324561. From the last multiple of 11, write all the multiples of 11. If it's more than 700, you don't need to write them. Many of the numbers listed do not meet the condition that 123456 appears only once. The numbers listed are: 132 143 154 165 231 341 352 451 462 561

Permutation and combination: in 0,1,2,3,4,5, take any two even numbers and two odd numbers to form how many four odd numbers without repeating mathematics,

Permutation and combination: in 0,1,2,3,4,5, take any 2 even numbers and 2 odd numbers to form 4-digit odd numbers without repeating numbers, and find out the detailed process. From 0,1,2,3,4,5, there are 3 even numbers; 0,2,4; 3 odd numbers 1,3,5 to form 4-digit odd numbers without repeating numbers. Requirements: 0 can't be ranked first, the number on one digit

How many permutations can there be in a group of 6 numbers from 01 to 25? Who knows the formula

The 25 numbers from 01 to 25, in a group of 6, are arranged as 25 * 24 * 23 * 22 * 21 * 20
Generally, the permutation number of m from n elements is n (n-1) (n-2) *. * (n-m + 1)
The order of arrangement should be considered
The combination does not consider the order, for example, a, B and B, a are the same combination
The combination number of m from n elements is n (n-1) (n-2) *. * (n-m + 1) / [M (m-1) (m-2) *. * 3 * 2 * 1], or n (n-1) (n-2) *. * (n-m + 1) / m
M! Is the factorial of M. for example, 5! = 5 * 4 * 3 * 2 * 1