There are 120 five digits made up of 1, 2, 3, 4 and 5. Put these five digits in order from small to large, and the 95th number is______ .

There are 120 five digits made up of 1, 2, 3, 4 and 5. Put these five digits in order from small to large, and the 95th number is______ .

Each of these five numbers has five digits in 10000 digits: 4 × 3 × 2 × 1 = 24 (number),
Then, the total number of five digits composed of 1, 2, 3, 4 on 10000 bits is: 24 × 4 = 96 (pieces),
Therefore, the 95th number should be the second largest number with 4 in the tens of thousands,
The 96th number in descending order is: 45321,
So the 95th number in descending order is: 45312;
So the answer is: 45312

The number 12345 can be composed of 120 five digits without repeated numbers. How to sum these numbers

Obviously, the number 1 appears 120 / 5 = 24 times in 10000 bits, and the same is true for 2, 3, 4 and 5
The numbers 1, 2, 3 And 5 also appeared 24 times in the thousand, the hundred, the tenth and the individual
So the sum of these 120 numbers
It is equivalent to 11111 * 24 + 22222 * 24 +
and
= (1+2+3+4+5)*11111 * 24
= 3999960

There are 120 five digits made up of 1, 2, 3, 4 and 5. Put these five digits in order from small to large, and the 95th number is______ .

For these five numbers, the five digits composed of each number on the 10000 bits are: 4 × 3 × 2 × 1 = 24 (pieces), then the total number of five digits composed of 1, 2, 3, 4 on the 10000 bits is 24 × 4 = 96 (pieces), so the 95th number should be the second largest number of 4 in 10000 digits, arranged in the order from small to large, the 96th number is

What is the number after the number 1,2,4,6,10 and what formula can be used to deduce it?

1+1=2
2+2=4
4+2*1=6
6+2*2=10
10+2*4=18

How many kinds of combination formulas are there for any two numerical values of 23 4 three numbers?

Two of them were randomly selected and there were three kinds of C (3,2) = 3
If the number of components: 3 × 2 = 6

Use 0, 2, 3, 5 four digit cards to form two digits______ Different pendulums

Method 1
4×3-1×3
=12-3
=9 species
Method 2
Using the numbers of 0, 2, 3, 5, the four number cards are: 20, 23, 25, 30, 32, 35, 50, 52, 53
So the answer is: 9

If nine numbers 1,2,3,4,5,6,7,8,9 are arranged into 9 digits, then there are several kinds of permutations in which adjacent numbers are mutually prime

First row 157, there are A33 kinds of permutation, in row 2468, there are a44 (insert space method) last 39, as long as it is not adjacent to 6, subtract two spaces from seven numbers, six empty A62, and finally A33 * a44 * A62 = 4320 select D

Observe the following column numbers 1, 4, 7, 10, 13, 16, 19 The 100th number is___ .

1+3×（100-1）
=1+297
=298
A: the 100th number is 298
So the answer is: 298

There's a string of numbers 1, 7, 13, 19, 25 The 1998 number in this column is______ .

According to the general formula of arithmetic sequence: an = a1 + (n-1) d,
1+（1998-1）×6，
=1+1997×6，
=11983，
So the answer is: 11983

There is a string of numbers: 1, 7, 13, 19, 25. What is the 2001 number of this column

1,7,13,19,25. What is the 2001 number of this column
This is an arithmetic sequence with a tolerance of 6,
According to the formula of the last term of arithmetic sequence:
Last term = first item + (number of items - 1) × tolerance
=1+（2001-1）×6
=12001