\(A=2+4+6+...+100\)
\(B=1+3+5+...+99\)
\(C=A-B=2-1+4-3+...+100-99\)
\(C=1+1+...+1=50\)
Đúng 0
Bình luận (0)
Violympic toán 7
Các câu hỏi tương tự
Help me please !!
Find the value of n, if the sum of even positive integers between n2 - n + 1 and n2 + n + 1 is a number between 2500 and 3000
Divide $132 into 3 parts such that the second part is 2/3 of the third part and the ratio between the first and the third parts is 3:7. The third part is ....
Các bạn làm giúp mình với, mình đang thi. Cảm ơn các bạn trước.
Divide $285 into three parts such that the second part is 1/4 of the third part and the ratio between the first and the second part is 4:3 The first part is
Divide $285 into three parts such that the second part is 1/4 of the third part and the ratio between the first and the second part is 4:3 The first part is
How many 4-digit whole numbers, whose sum of all its digits is 35, are even?
Answer: number(s).
viết lại câu sao cho nghĩa không đổi
1. they will put solar panels on our neer year
2. my father will buy a new afrartment next week
3. she is so young but she sings beatiful
4. nam has done his homework recently
5. nam is the tallest in his class
6. what is the distance between HN and HCM city
Tìm lỗi sai và sửa lại.
1,Mrs Brown eats a few fruit in breakfast
2, I have less books at English than my classmates
3,We're go to have a two weeks summer vacation on Hue last month
4,Long usually stay up lately to doing his homework
5,In the future,robots will doing all the house works for I and you
giúp mk vs , mk cần gấp
Câu 9:
Three different positive integers and are such that .
What is the value of ?
Answer:
Câu 10:
Of the numbers 1,2,…,1000, how many numbers are divisible by neither 6 nor 9?
Answer:
Between which pair of whole numbers does the square root of 45 lie?