Các câu hỏi tương tự
1) Fill the mussing number. A cube has.....vertices
2) Fill the missing number. We're in the....st century
3) Ther are only two 2-digit numbers that are a multiple of 7 and the sum of thetr two digits is 10. Find the sum of these two 2-digit numbers: 70,119,140,21
4) The fourth power of 3 is...
5) Twice the square of 3....
6) The number of ethnic group in Vietnam?
7) The perimeter of 4cm square egde in cm?
How many two-digit numbers N have the property that the sum of N and the number formed by reversing the digits of N is a perfect square ?The square SAMF has an area of 169. It contains two over lapping squares. The smaller of these sqares has an area that is one quarter of the larger of them, and the erea of their overlap is 4. What is the erea of the shaded region ?In the diagram, each of the integers 1 through 9 is to be placed in one circles, both horizontal and diagonal, add to 18. The 6 and...
Đọc tiếp
How many two-digit numbers N have the property that the sum of N and the number formed by reversing the digits of N is a perfect square ?The square SAMF has an area of 169. It contains two over lapping squares. The smaller of these sqares has an area that is one quarter of the larger of them, and the erea of their overlap is 4. What is the erea of the shaded region ?In the diagram, each of the integers 1 through 9 is to be placed in one circles, both horizontal and diagonal, add to 18. The 6 and 1 have been filled in as shown. Determine the value of the number represented by x in the diagram. Justify your answerHow many digits does the number 2013 have ?
The sum of digits of is A,the sum of digits of A is B,and the sum of digits of B is C.The value of C is
The sum of digits of 3^100 is A,the sum of digits of A is B,and the sum of digits of B is C.The value of C is
The sum of digits of 3^1000 is A,the sum of digits of A is B,and the sum of digits of B is C.The value of C is
The sum of digits of 31000 is A,the sum of digits of A is B,and the sum of digits of B is C.The value of C is
What is the difference between the sum of the first 100 positive even numbers and the sum of the first 100 positive odd numbers ?
What is the largest 3-digit number that has all of its digits different and is equal to 37 times the sum of its digit ?
Câu hỏi tiếng ANH :
If the sum of all the digits in each of two consecutive positive integers are both exactlt multiple of 5. Then what is the least sum of these two integers ?
A. 99 B. 999 C. 9999 D. 99999