1+2+…… +100 = 5050; then 51 + 52 + +How much is 100?
1+2+3+...50=(1+50)+(2+49)+(3+48)+...(25+26)=51*25=1275
51+52+…… +100=5050-1275=3775
What does (- 1 / 2) ˉ 1 Equal
-2
1 () () times () equals () () 52, and the number 9 appears only once
1963*4=7852
Please refer to
RELATED INFORMATIONS
- 1. Simple calculation of 333 × 66.6 + 777 × 99.9 + 99.9
- 2. 1=2=9=66=88=?
- 3. Six English homework books 40 to 43 answers,
- 4. Mathematical problems (logical reasoning) There are 2 suspect in the 1 murders, 4 witnesses, 1 witnesses: no one guilty. Witness 2: B is innocent. Witness 3: at least one of the 2 people in front is true. Witness 4: witness 3 lying! Only the witness speaks the truth with 4. Who is the murderer?
- 5. Give me some logical questions The more, the better.
- 6. Uncle Li bought 5000 yuan of treasury bonds in 2004, fixed for three years. The annual interest rate of the three-year treasury bonds is 3.32%, How much can Uncle Li get back when it's due
- 7. Mr. Wang plans to deposit 5000 yuan into the bank for two years with an annual interest rate of 4.40%. After the maturity, how much yuan can Mr. Wang get in interest and principal?
- 8. How many years is the average service life of electrical appliances 1. The average service life of electrical appliances is () years A、8 B、10 C、11 D、12
- 9. Logical reasoning problem solving, Logical reasoning questions: If: 1 = 1,2 = 2,3 = 3,4 = 5,5 = 8,6 = 10,7 = 13,8 = 16,9 = 23,10 = 32 So: 11 =? Why? I'm very sorry, because my title was not written well, it was deleted by the system, so I had to write it again! Please say why!
- 10. Logical reasoning problem solving, Logical reasoning questions: If: 1 = 1,2 = 2,3 = 3,4 = 5,5 = 8,6 = 10,7 = 13,8 = 16,9 = 23,10 = 32 So: 11 =? Why? I'm very sorry, because my title was not written well, it was deleted by the system, so I had to write it again! Please say why!
- 11. 88 = 5 + 26-3 + 52-36 + (? - 44) who can answer
- 12. 115 seconds is a few minutes
- 13. Angle B equals 30 degrees angle c equals 45 degrees AB equals 20 degrees BC
- 14. What is 1-1 / 2 + 1 / 6 + 12 / 1 + 20 / 1 + 24 / 1 + 28 / 1 +. + 1 / 72 + 1 / 90?
- 15. Calculating a problem: 12 + 32 + 52 + 72 +. + 452 requires two solutions
- 16. If the sum of three consecutive odd numbers is 51, what are the three numbers
- 17. What number is multiplied by 3, plus 3 / 4 of the product, and then divided by 7, minus 1 / 3 of the quotient, minus 52, plus 8, and divided by 10 to get 2?
- 18. The base composition of a biological nucleic acid, purine base accounted for 52%, pyrimidine base accounted for 48%, this organism must not () A. Bacteriophage B. Escherichia coli C. Penicillium D. tobacco mosaic virus
- 19. The sum of eight different non-zero natural numbers is 56. If you remove the largest number and the smallest number, then the sum of the remaining numbers is 44?
- 20. 52+54+56+… +200