There is a column of numbers: 1, 6, 11, 16, 21... According to the arrangement of numbers, the 80th number is ()
5n-4
5*80-4=396
RELATED INFORMATIONS
- 1. Find the rule: 3,6,7,14,15,30
- 2. 31 30 15 14 7 () () 1 7 8 14 15 21 22 () () this is to find rules
- 3. Find rules: 0,1,2,3,6,7,14,15,30,,, 63,64128 Fill in the numbers in brackets
- 4. The following column numbers are given: 2, 43, 678, 131021 Then the nth number is______ (expressed by an algebraic expression containing n)
- 5. Find the law, 23618 find the fifth number. A.128 b.148 c.168 d.188
- 6. What is the number that is a factor of 18 and a multiple of 3? Urgent ~
- 7. A number is not only a factor of 18, but also a multiple of 3. How many Xie are there
- 8. A number is not only a factor of 18, but also a multiple of 18______ .
- 9. Find the sum of multiples of 3 in the factor of 18
- 10. The sum of multiples of 3 in the factor of 18
- 11. The number of this column is arranged according to a certain rule. Fill in the number according to the rule: 1,5,21,85341, () Urgent need
- 12. There is a column of numbers, 2, 5, 8, 11, 14 Then 104 is the () th number in this column A. 33B. 32C. 34D. 35
- 13. There is a column of numbers, 2, 5, 8, 11, 14 Then 104 is the () th number in this column A. 33B. 32C. 34D. 35
- 14. In a column of numbers 2,7,14,23. What is the 15th number
- 15. Find the rule and fill in the following: 1. 2 × 6 = 12, 3 × 8 = () 48 / 8 = () ②:12÷4=3 ()÷4=() ()×5=() ③:2×6÷4=() ()○()○()=() ()○()○()=() Note: () fill in the number ﹣ fill in × and ﹣ in If you write correctly, you will get higher marks
- 16. Calculate and fill in the blanks 1=1 1+3=4 1+3+5=9 1+3+5+7=16 1+3+5+7+9=25······ 1. Carefully observe the above operations and results, and write the nth equation 2. According to the law: 1 + 3 + 5 + 7 + 9 + ··· + 2013
- 17. Find the rule 1 + 2 + 3 +. 49 + 50 + 49 +. 3 + 2 + 1=
- 18. 1 * 2 * 3 / 1 + 2 * 3 * 4 / 1 + 3 * 4 * 5 / 1 +. 48 * 49 * 50 / 1 simple algorithm you just calculated a problem for me, help me
- 19. 2 + 3 + 4 + 5 +. + 48 + 49 + 50 = how to find the law,
- 20. Find rules 7, 8, 10, - 22, 38