Lời giải:
Bội của $11$ thì có dạng $11k$ ($k\in \mathbb{N}$)
Ta có:
\(99\leq 11k\leq 20130\)
\(\Leftrightarrow 9\leq k\leq 1830\)
\(\Rightarrow k\in\left\{9;10;....1830\right\}\)
Từ $9$ đến $1830$ có \((1830-9):1+1=1822\) số.
Như vậy có $1822$ số $k$, tương ứng với $1822$ số $11k$.
Vậy trong dãy $99,100,101,....,20130$ có $1822$ số là bội của $11$
Find the number of 3-digit positive numbers that have product of digits equals to 21.
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
I add up all even number between 1 and 101. Then from my total I subtract all odd numbers between 0 and 100. What is the result?
In triangle mnp, an exterior angle at p is represented by ( 21x + 83 )º .if the two non - adjacent interior angles are represent by ( 9x + 35 )º and ( 10x + 50 )º ,find the value of x
Write the film review, using the following cues:
A Film Review:
-What kind the film is : a Disney cartoon film
-What the title of the film is: Atlantis: The lost empire
-Who the film is directed by: Gary Trousdale and Kirk Wise
-Who the main charater is: a scientist named Milo Thatch
-Who the characters are played by: Milo's voice is played by Michael J.Fox
-A short description of the plot the story: A rich man gives Milo a submarine and a team of people to help him find the Lost Empire of Atlantis. After some exciting adventures, Milo and his team find Atlantis. But Atlantis is in trouble. Milo has to save it
-Details of special effects/costumes/music,etc: The music in this film is amazing
-What we think is good or bad about the film: The film is sometimes scary, but it is very exciting
-A recommendation (advice about whether your classmates should watch this film and who will enjoy it): If you like action films and cartoons, you will love Atlantis: The Lost Empire
Answer:
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a, b \(\in\) R+ thỏa mãn :
a100 + b100 = a 101+ b 101 = a102 + b 102
Tính P = a2017+ b207
A rectangular tank with a square base of side 5 metres contains water to adepth of 4 metres. A solid cube of edge 3 metres is placed at the bottom of a tank. The level of water in the tank, in metres, rises to ____________ (Input the answer as a decimal in its simplest form)
Cho a,b,c,d \(\in R\) thỏa mãn:
a100+b100=a101+b101=a102+b102
Tính giá trị S = a2018+b2019
Cho tớ hỏi bạn nào giải toán tiếng anh vòng 5 phân biệt cho tớ square root of 0 và the number of square of 0
P/s: lớp 7 nhá!!!!!!!!!!!!!!
