Please help to find the law of numbers and fill in the blanks: 1,3,6,10,15 (), (). 2; 1,2,6,24120 (), ()

1,3,6,10,15,21,28
1,2,6,24.120,720,5040

RELATED INFORMATIONS

1. Fill in the blanks according to the rule
2. Observe the law of the number in the figure below, and fill in the appropriate number in the brackets______ ．
3. Find the rule and fill in the appropriate number in the brackets. 2, 3, 4, 5, 8, 7______ ，______ ．
4. -1,2, - 6,24, - 120720 It's troublesome to find the analytic formula of a function. Explain why
5. 1,2,6,24120, the general formula of several numbers
6. The formula of 1 / 2,5 / 6,23 / 24119 / 120719 / 720 What if it can't be expressed as a factorial? What should I do?
7. Function value 1 26 24 120 720 5040 to solve function analytic formula Give a process the best
8. Solving mathematical problems, Beijing Normal University Edition (grade 4) At the sports meeting, Xiao Ming ran and jumped 0.26 meters more than the second place, while the third place jumped 0.18 meters less than the second place. How many meters more than the third place?
9. The answer to the 55th thinking training of synchronous reading of mathematics in Volume 1 of grade 5 80 Chinese books and 100 mathematics books cost the same. Each Chinese book costs 40 cents more than the mathematics book. What's the unit price of each Chinese book? What's the unit price of Chinese books Total price of Chinese books Unit price of mathematics book Total price of mathematics books fill the chart
10. The answer of synchronous reading in the fifth grade of primary school
11. 1,4,10,22,46, (), 190 fill in the blanks
12. Fill in the blanks 1,4,2,1,1 / 2,1 / 4, (), (), (), 2,1 / 8,1 / 32,1 / 4,1 / 16, (), (), 3、1/2,1/6,1/12,1/20,1/30,1/42,（）,（）,（）, In a hurry
13. Fill in 128, 24, 32, (), 8, () 2
14. 1 / 6 + 1 / 24 + 1 / 60 + 1 / 120 =? Can it be simple?
15. 1/120+1/210+1/336+1/504=?
16. 1 / 60 + 1 / 120 + 1 / 210 + 1 / 336 + 1 / 504 + 1 / 720 =? Urgent! 20 points Process! Simple calculation!
17. Number reasoning: 0,6,24,60120______ A.186 B.210 C.220 D.226 Explain why!
18. 0.6.24.60.120. (210), how is it calculated? And 8.8.6.2,
19. 6.24.60.120
20. 0,6,24,60,120,210,()