Các câu hỏi tương tự
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:
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:
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?
Problem 1. Find two distinct numbers, given that their sum is three times their difference, and their product is eight times their difference.Problem 2. The following sequence of numbers was written on a board: 1, 2, 3, 4, ..., 200. Uyen erased three consecutive numbers and the sum of the remaining numbers is 19848. Find the three numbers that were erased.Problem 3. The price of a type of chalk in August dropped by 10% compared to that in June, but increased by 10% in October compared to that in...
Đọc tiếp
Problem 1. Find two distinct numbers, given that their sum is three times their difference, and their product is eight times their difference.
Problem 2. The following sequence of numbers was written on a board: 1, 2, 3, 4, ..., 200. Uyen erased three consecutive numbers and the sum of the remaining numbers is 19848. Find the three numbers that were erased.
Problem 3. The price of a type of chalk in August dropped by 10% compared to that in June, but increased by 10% in October compared to that in August. How many percent has the price increased or decreased from June to October ?
Problem 4.Find the smallest whole number such that when it is multiplied by 12345679, the resulting product is a number having all of its digits equal to 8.
Problem5. Find the digits a and b such that the number 2016ab is divisible by 2 and 9, and has a remainder of 3 when divided by 5.
Find the missing numberFind the value of...Find the 3rd number What is the smallest possibleArrange the digitsThere is one digit between the2sIn the figure Find the total surfaceFind the sum of... how many of them contain the shaded unitfind the area of...Find the remainderBetween A and B,at least one was selectedFind the positionsFind the raitio...to ...Find the lengthFind an rrangement
Đọc tiếp
Find the missing number
Find the value of...
Find the 3rd number
What is the smallest possible
Arrange the digits
There is one digit between the2's
In the figure
Find the total surface
Find the sum of...
how many of them contain the shaded unit
find the area of...
Find the remainder
Between A and B,at least one was selected
Find the positions
Find the raitio...to ...
Find the length
Find an rrangement
John wrote a 3-digits number on a piece of a paper and asked Peter to guess it. Peter asked:Is the number 173 ?.John replied:One of the digits is correct, the position of that difiy is also correct. Peter asked again:Is the number 123 ?. Two digits are correct, but the position of those digits are wrong. Peter asked again:Is the number 324 ?. All three are correct , but the digits are all in the wrong places. What is the number written by John ?Help me. Ai đúng tớ tick với KB nhé
Đọc tiếp
John wrote a 3-digits number on a piece of a paper and asked Peter to guess it. Peter asked:"Is the number 173 ?".John replied:"One of the digits is correct, the position of that difiy is also correct". Peter asked again:"Is the number 123 ?". Two digits are correct, but the position of those digits are wrong." Peter asked again:"Is the number 324 ?". All three are correct , but the digits are all in the wrong places." What is the number written by John ?
Help me. Ai đúng tớ tick với KB nhé
The sum of the digits of a ten-digit number is epual to 9.What is the product of the digits of this number?
Find the greatest 3 - digit number such that the product of its digits is 432 ?
Find the sum of digits of a number : 123...910111213141516...9899