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The number N is the product of two primes.The sum of the positive divisors of N that are less than N is 2014.Find the value of N.
Number 6 is written as sum of two positive integers in three different ways: $6=1+5=2+4=3+3.$ (order does NOT matter). That is, there are exactly three different pairs of positive integers that add to make six. How many pairs of positive integers that add to make 1000?
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...
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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 ?
Number 6 is written as sum of two positive integers in three different ways: $6=1+5=2+4=3+3.$ (order does NOT matter). That is, there are exactly three different pairs of positive integers that add to make six. How many pairs of positive integers that add to make 1000?
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Câu 1: Given that is divisible by 9. What is the value of ? Câu 2: How many elements of the set A are divisible by 9?Câu 3:A is a set of multiples of 12 less than 12. How many elements does the set A have?Câu 4:Find the remainder when is divided by 3.Câu 5:Given that 511 is the sum of two prime numbers and , . What is the value of ?Câu 6:Given that . Find the value of .Câu 7:Given that . How many divisors does the number A have?Câu 8:Find the natural number so that the product of and 5 is a...
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Câu 1: Given that is divisible by 9. What is the value of ?
Câu 2: How many elements of the set A are divisible by 9?
Câu 3:A is a set of multiples of 12 less than 12. How many elements does the set A have?
Câu 4:Find the remainder when is divided by 3.
Câu 5:Given that 511 is the sum of two prime numbers and , . What is the value of ?
Câu 6:Given that . Find the value of .
Câu 7:Given that . How many divisors does the number A have?
Câu 8:Find the natural number so that the product of and 5 is a prime number.
Câu 9:
Given that . How many divisors does the number A have?
Câu 10:
Given that . How many divisors the number A have?
There are three different natural numbers. Their sum is 1267 . When the greatest common divisor of these is the largest. Find three numbers
How many four-digit integers greater than 5000 are there for which the thousands digits equals the sum of the other three digits?
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A 4 - digits numbers divisible by all of the numbers from 1 to 10 without any remainder. Find the smallest possible value of the 4-digits number
A 4 - digits numbers divisible by all of the numbers from 1 to 10 without any remainder. Find the smallest possible value of the 4-digits number