số đó là 42857. Chúc em học tốt, muốn biết cách làm thì tích đúng và kb nha
Chúc bạn học tốt. Cảm ơn bạn nhiều
if we put the digit 1 at the beginning of a 5-digit number , we get a number that is one third as number gotten if we put the digit1 at the end of this number as . find this number.
Ai giải cả tiếng việt lẫn tings anh thì mk t
Mary calculates the sum of the digit that she sees on her clock (example : if the clock shows 16:35 then she get 15).what is the biggest sum she can get if the clock is a 24 hour clock?
191 is the number that stays the same when read backwards as when read forwards
How many 4 - digit number have this property?
Câu 9:
The average mass of a group of children is 47kg. If of the number of children are girls and their average mass is 39kg. Find the average mass of the boys.
Answer: The average mass of the boys is kg
Câu 10:
A 6-digit number begins with the digit 8. The number is divisible by 9 and all digits of the number are different. What is the possible smallest value of this number?
Answer:
if delete the last digit of a 3-digit number then it will be decreased by 93 units. Find the original number. Answer the original number is
A 6 digit number begins with the digit 8.The number with divisible by 9 and all digits of the number are different.What is the possible smallest value of this number?
The sum of the digits of a ten-digit number is epual to 9.What is the product of the digits of this number?
A,B,C,D,A+C,B+C,A+D,B+D represent 8 diffirent natural numbers from 1 to 8. If A is the largest number in the number from 1 to 8.Find A
How many natural numbers are there between 100 and 999 that unit-digit and tens-digit equal hundreds-digit ?
a) find the next two term in the sequence: 1; 4; 9; 16; 25;....;.....;
Answer:
b) find the smallest two-digit number whose number is 7 times the sum of its digits?
Answer:
