Có 8 cặp (1;7)(-1:-7)(7;1)(-7;-1)(5;5)(-5;5)(5;-5)(-5;-5)
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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?
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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There are 4 pieces of white chopsticks, 5 pieces of yellow chopsticks and 6 pieces of blue chopsticks mixed together. If you want to get 2 pairs of chopsticks with the same colour in the dark, at least how many pieces of chopsticks should be taken?
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Câu 1:A is a set of multiples of 12 less than 12. How many elements does the set A have?Answer: The set A has element(s)Câu 2:Find the remainder when is divided by 9.Answer: The remainder is Câu 3:Find the remainder of when it is divided by 3.Answer: The remainder is Câu 4:A is the set of factor of 12 more than 6. How many elements does the set A have?Answer: The set A has element(s)Câu 5:Find the natural number so that the product of and 5 is a prime number.Answer: Câu 6:Given that . How...
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Câu 1:
A is a set of multiples of 12 less than 12. How many elements does the set A have?
Answer: The set A has element(s)
Câu 2:
Find the remainder when is divided by 9.
Answer: The remainder is
Câu 3:
Find the remainder of when it is divided by 3.
Answer: The remainder is
Câu 4:
A is the set of factor of 12 more than 6. How many elements does the set A have?
Answer: The set A has element(s)
Câu 5:
Find the natural number so that the product of and 5 is a prime number.
Answer:
Câu 6:
Given that . How many divisors does the number A have?
Answer: The number A has divisors.
Câu 7:
Given that . How many divisors does the number A have?
Answer: The number A has divisors.
Câu 8:
How many prime numbers less than 10 are there?
Answer: There are numbers.
Câu 9:
Find the greatest 2-digit number that has 12 divisors.
Answer: It is
Câu 10:
Among all natural number pairs satisfy , one pair has the greatest product. What is this product?
Answer: The greatest product is
How many natural numbers having three digits such that the tens digit squared equals the product of other digits and the difference between that number and its reversed order is 495?
Answer: There are numbers.
How many integers x are there such that 1 < │x - 3│ < 100.
How many natural numbers having three digits such that the tens digit squared equals the
product of other digits and the difference between that number and its reversed order is 495?
Answer: There are numbers.
How many natural numbers having three digits such thatthe tens digit squared equals the product of other digits and the differencebetween that number and its reversed order is 495?
Answer: There are numbers.