12×1/2+6×4/3,=

RELATED INFORMATIONS

• 1. Fill in the numbers 1,3,2,6,4 (), (), 12, ()
• 2. 1/24÷(1/2-1/3+1/6-1/12)
• 3. 1 + 1 = 4, then 2 + 2 = () 3 + 3 = () find the law
• 4. Find rules 1, 1, 2, 3, 4, 7, () Please write down the process and how you think about the calculation so that I don't understand it If it's 11, 2 + 3 = 5, shoot directly. You have to say what you think and prepare for the Jiaochuan academy entrance examination, so you need to know the calculation process. Choice: a 6 B 8 C 9 d 11, pay attention to the choice, only these four answers. Choose 11 to ignore, repeat, 2 + 3 = 5!
• 5. How to prove 1x2 + 2x3 + +n(n+1)=n(n+1)(n+2)/3 By the way, 1x2 + 2x3 + +n(n+1)（n+2）=n(n+1)(n+2)(n+3)/4
• 6. Fill in the number according to the rule: - 1 / 2 2 / 3 - 3 / 4 4 / 5 - 5 / 6 (),... () n) Ignorance of the small generation of God to save
• 7. What's 1 up to 100
• 8. What's one plus 100,
• 9. Observe the numbers of the following groups, find out their rules, and express the nth (n is a positive integer) number with the formula: Such as: 1,4,9,16,25 The number of n is n & # 178; (1) - 2, - 8, - 32, - 128 ；（2）-2,4,-8,16,-32,… ；（3）-1,4,-9,16,-25,… .
• 10. There is such a series of numbers 1,2,5,6,9,10. Please give the general formula
• 11. 6-（1/2+3/4-5/12）?
• 12. Mathematical calculation 1 ^ 3 + 2 ^ 3 + +Calculation method and formula of 100 ^ 3
• 13. How to do 1 2 3 4.100 simple calculation method?
• 14. How much is 1 added to 100? Is there a simple formula?
• 15. 1 is 3, 2 is 6, 3 is 10, 4 is 15 ask the nth number (formula) thank you! I'm in a hurry
• 16. Simplify the following: 2 / 5 to 3 / 4, 5 / 6 to 1 / 6
• 17. M = (n-1) × 1 + (n-2) × 2 + (n-3) × 4 + (n-4) × 8 + (N-5) × 16 + (n-6) × 32 + (N-7) × 64?
• 18. Given the A1 = 2 a n + 1 - a n = 3 of the sequence {an}, the general term formula of the sequence is
• 19. What's 1 to 100? 5050
• 20. How much is one plus one plus two plus three plus four plus five all the way up to 100