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There is a group of numbers: 1, 6, 7, 12, 13, 18, 19, 24 If you write down according to this rule, the number in position 2006 is divided by 7, and the remainder is______ ．
Item 2006 is an even number item, it is: 2006 × 3 = 6018; 6018 △ 7 = 859 5. A: the remainder is 5. So the answer is 5
There is a set of numbers, 1,6,7,12,13,18,19,24 If you write down according to this rule, the number in position 2012 is divided by 7, what is the remainder?
According to the sequence rule:
The odd sequence is an arithmetic sequence that starts with 1 and takes 6 as the difference
Even sequence is an arithmetic sequence which starts with 6 and takes 6 as the difference, that is, a multiple of 6
2012/2=1006
6*1006=6036
6036 / 7 = 862 + 2
So the remainder is two
How to calculate 24 with 19, 20, 21, 22?
Use 19.20.21.22 and add subtract multiply divide or bracket to calculate 24 ~ how to calculate~
22+(19+21)/20=24
There are the following numbers: 1 4 7 10 13 16 19 22 25 ······ 2005? If yes, which one?
Add 32005-1 = 20042004 / 3 = 668 in turn, which is the 669th one
How many numbers can be taken out of 1 4 7 10 13 16 19 22 25 28 31 34 37 to ensure that the sum of two numbers is 38
Give reasons
above
1 and 37, 4 and 34 The sum of 16 and 22 is 38. There are six groups, one more 19
Except 19, if each group takes one number, and any number is taken again, the sum of the two numbers can be guaranteed to be 38
Take at least 8 numbers to ensure that there are two numbers with a sum of 38
Take at least a few of these numbers to ensure that the sum of the numbers taken out is 38 and give reasons
To use because. So. To explain the reason
Because 1 + 37 = 4 + 34 = 7 + 31 = 10 + 28 = 13 + 25 = 16 + 22 = 38
So at least 1 + 6 + 1 = 8 numbers can be extracted to ensure that the sum of the extracted numbers is 38
Choose 7 different numbers from 1,4,7,10,13,16,19,22,25,28,31,34, and the sum of 2 numbers must be 35. Why?
1+34=4+31=7+28=10+15=13+22=16+19=35
The sum of 6 logarithms is 35
According to the principle of drawer, if you choose any seven different numbers from them, at least one pair of them must be taken, so the sum of two numbers must be 35
13 16 19 22 25 28 31 34 37 make the sum of three numbers in horizontal, vertical and oblique lines equal to 75
16 37 22
31 25 19
28 13 34
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There is a string of numbers 1.4.7.10.13.16.19.22.25. Is the natural number 2005 in the string? If it is in the number of the first 100? Please calculate the first 100 of the string
The sum of
The sequence an = 1 + 3 (n-1), 2005 / 3 = 668, more than 1, in line with the sequence, so it is the 669th. The sum of the first 100 digits (a1 + A100) 100 / 2 = (1 + 298) × 50 = 14950,
A number string is: 1,4,7,10,13,16,19,22,25 Is natural number 2008 in this string? If it is the sum of the first 100 numbers
I want to explain every step and write clearly. I can't think fast
Tell me before 3:30 today that I'm going to class
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