There is a column of numbers: 1,3,4,7,11,18... To find the number 2006 divided by 6

It can be found that the recurrence formula of this sequence is: a (n + 2) = a (n + 1) + an. In this way, if you find the remainder of the nth number divided by 6, you can add up the remainder of the first two numbers divided by 6, and then take the remainder of the sum divided by 6. Then the previous remainder is: 1,3,4,1,5,5,5,4,3,1,4,5,3,2,1,0,1,2,3,5

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1. One column number 1, - 2,3, - 4,5 - 6 What is item n
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3. Observe the law of the following column numbers: - 1,1,2, - 2, - 3,3,4, - 4, - 5,5 What is the number 2006? It's better to give a brief reason
4. Observe the law of the following column numbers: - 1,1,2, - 2, - 3,3,4, - 4, - 5,5,6, - 6 Then the number 2006 is ()
5. Xiao Ming walked four times along a 50 meter long straight road, 78 steps for the first time, 82 steps for the second time, and 79 steps for the third time, The fourth time is 80 steps. Xiaoming's average step length is about () meters. The number is two decimal places
6. Sasa walked three times along the 80 meter long straight road, 120 steps in the first time, 124 steps in the second time, and 122 steps in the third time. What is the average length of Sasa's step She walked 1020 steps from home to school. How many meters does Sasha's home go to school?
7. Xiao Ming walked along a 70 meter straight road. He took 110 steps for the first time, 111 steps for the second time, 109 steps for the third time and 110 steps for the fourth time. What is the average length of one step
8. A and B run back and forth on a 100 meter long straight road, with a speed of 3 meters per second and B speed of 2 meters per second. If they start from both ends of the straight road at the same time, how many times do they meet after 10 minutes?
9. Xiao Ming wanted to know his step length, so he walked three times along the track 100 meters away, 124, 126 and 125 steps respectively. Xiao Ming's step length was about 100 meters______ He measured the length of the cement road in the center of our school. After about 150 steps, the cement road in the center is about long______ Rice
10. Xiaoguang walked 80 meters, 125 steps for the first time, 130 steps for the second time, 123 steps for the third time and 122 steps for the fourth time. His average step length was () meters?
11. There is a column of numbers: 1,2,3,2,1,2,3,4,3,2,3,4,5,4,3,4,5,6,5,4, what is the number 2006
12. A column of numbers 1, - 2, 3 -, 4, 5, - 6. Find the number 2009, what is the number 2010
13. There is a column of numbers 1,2,3,2,3,4,3,4,5,4,5,6 The number 2009 in this series is ()
14. A series of numbers are arranged according to the rule, 1 / 1 1 / 2 2 / 2 1 / 3 2 / 3 3 / 3
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