Violympic toán 8
Các câu hỏi tương tự
Let N be the langest number ò region that can be formed by drawing 2016 straight lines on a plane. Find the sum ò all digits of N.
Find all natural numbers having two digit , knowing that twice the units digit 1 more than the ten digit , and if we write that two digits in reverse order, we get a new number which is 27 less than the old one
What is the sum of all digits of the page numbers of a 76-page book?
Write 19951995 as a sum of natural number. The remainder when we divide the sum of the cubes of those natural numbers by 6 is
Compere the number P=888...888x333...333 and Q=444...444x666...667,where each has 2017 digits
the sum of the five possible is 3 times on of them , 7 times another and 5 times a third . The sum of the other two number is 34 . What is the largest of these five numbers ?
Compere the number P=888...888x333...333 and Q=444...444x666...667,where each has 2017 digits
Làm bằng tiếng anh hộ mình nhé
A person has a devide of which the password includes five dights from 1 to 5. One day he forgot the password and tried to open it.
The first time, he tried 12345. No dight in the correct place and no place of correct dights appeared.
The second time, he tried 41532. There were two dights in the correct place and two pairs of correct digits appeared. What's the password.
A. 15432
B. 45213
C. 54132
D. 45123
The average of three numbers is 42. All three are whole positive number and are different from each other.
If the least number is 20, what could be the greatest possible number of the remaining two numbers?
Answer: ......