The first line: 1, the second line: 2, 3, the third line: 4, 5, 6, the fourth line: 7, 8, 9, 10. According to the law, what's the last number in line 10000? The teacher asked us: the first line: 1, the second line: 2, 3, the third line: 4, 5, 6, the fourth line: 7, 8, 9, 10. According to the law, what is the last number in the 10000 line?

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• 1. The numbers of 1, - 1 / 2,1 / 3, - 1 / 4,1 / 5, - 1 / 6 are arranged as follows according to certain rules: the first line is 1, the second line is - 1 / 2 1 / 3, the third line is - 1 / 4 1 / 5 - 1/ 0 - 14 days and 23 hours to the end of the problem The numbers 1, - 1 / 2,1 / 3, - 1 / 4,1 / 5, - 1 / 6 are arranged as follows according to certain rules, First line 1 Second line - 1 / 2 1 / 3 The third line - 1 / 4 1 / 5 - 1 / 6 The fourth line 1 / 7 - 1 / 8 1 / 9 - 1 / 10 The fifth line 1 / 11 - 1 / 12 1 / 12 - 1 / 14 1 / 15 ………… ……………… ………… So, can you write seven numbers from left to right on line 199? Be more specific. I'll hand it in tomorrow
• 2. Find the rules: first line: 1, second line: 2, 3, third line: 4, 5, 6 According to the above arrangement The third number from left to right in line n (n > = 3) is
• 3. -1 2 - 3 4 - 5 6 - 7 8 - 9 10 - 11 12 - 13 14 - 15 16 according to this rule, number 2010 from the left should be in several rows and columns
• 4. The famous Leibniz triangle in the world is shown in the figure. The number on the third position from the left is () A. 1132B. 1360C. 1495D. 1660
• 5. The famous Leibniz triangle in the world, as shown in the figure, is the number in the eleventh row from the right to the third position? Fig.1/1 1/2 1/2 1/3 1/6 1/3 1/4 1/12 1/12 1/4 1/5 1/20 1/30 1/20 1/5 1/6 1/30 1/60 1/60 1/30 1/6 1/7 1/42 1/105 1/140 1/105 1/42 1/7 . Find the number in the eleventh row from the right to the third position
• 6. What is the number in the third position from the left of line 40 of the Leibniz triangle? Hope to be able to give reasons
• 7. What is the third number on the left of the tenth line of the Leibniz triangle?
• 8. What is the number of line 8 of the Leibniz triangle from the third position on the left?
• 9. Fill in the numbers according to the rules: 89, 23, 12______ 、932、______ ．
• 10. 1. (7 + 4 √ 3) (2 - √ 3) ^ 2 2. √ (1 / 25) ^ 2 - (2 / 5) ^ 2 3. √ 80 * √ 5 - √ 50 * √ 2 4. √ 4 / 3 ÷ 3 / 2 * √ 9 / 8
• 11. How many integers from 1 to 2010 are not divisible by 2 or 3?
• 12. From 1, 2 How many numbers can be taken out of 2010 positive integers, so that the sum of any three numbers can be divided by 33?
• 13. From 1, 2 How many numbers can be taken out of 2010 positive integers, so that the sum of any three numbers can be divided by 33?
• 14. From 1, 2 How many numbers can be taken out of 2010 positive integers, so that the sum of any three numbers can be divided by 33?
• 15. From 1, 2 How many numbers can be taken out of 2010 positive integers, so that the sum of any three numbers can be divided by 33?
• 16. The sum of three numbers is 7 / 12. If one number is 1 / 10 and the other is 1 / 4, find the third number One minute!!! Hurry, hurry, hurry, hurry, hurry, hurry!!!!!!!!!!!!!!!!!!!!!!!!! one
• 17. 1, 2, 4, 8, 16, what is the number of 2013? What if it's the nth number? Is it the N-1 power of 2?
• 18. The average of a set of data 2,0, negative 2,1,3 is
• 19. Take 4 / 1,4 / 1,4 / 1,4 / 1 as the weight to calculate the average number of this group of data, and 0.1,0.2,0.3,0.4 as the weight to calculate the average number of this group of data This set of data is 21, 32, 43, 54
• 20. There are 10 data in a group, and the difference between each data and their average is - 2,4,4,5, - 1, - 2,0,2,3, - 5, then the variance of this group of data is - A .0 B.104 C.10.4 D.3.2