Các câu hỏi tương tự
Question 1:The least common multiple of 330; 65; 15 is Question 2:Given seven numbers: 25; 17; 39; 43; 239; 1021; 1023.The composite numbers are (Write numbers in order from the least to the greatest and use ;)Question 3:The common factors of 18 and 27 are (Write numbers in order from the least to the greatest and use ;)Question 4:Given the set of even numbers: {2; 4; 6; …; 100}.The number of elements is Question 5:Find four integer numbers a,b,c,d such thata + b + c + d 1a + c + d 2a + b + d...
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Question 1:
The least common multiple of 330; 65; 15 is
Question 2:
Given seven numbers: 25; 17; 39; 43; 239; 1021; 1023.
The composite numbers are
(Write numbers in order from the least to the greatest and use ";")
Question 3:
The common factors of 18 and 27 are
(Write numbers in order from the least to the greatest and use ";")
Question 4:
Given the set of even numbers: {2; 4; 6; …; 100}.The number of elements is
Question 5:
Find four integer numbers a,b,c,d such that
a + b + c + d = 1
a + c + d = 2
a + b + d = 3
a + b + c = 4
Answer: (a;b;c;d)=()
Question 6:
Find a four-digit natural number that is less than 2015.If the thousands digit is erased,the number will be decreased by 9 times.
Answer:The number is
Question 7:
Calculate: 1×2+2×3+⋯+100×101=
Question 8:
The term of the expression A=1-7+13-19+25-31+⋯ is
Question 9:
Given the expression A= ...
Find the value of n such that 2A+3=
Answer: n=
Question 10:
A natural number has six digits and the units digit is 4.If the units digit is moved to the first row then the number will be increasedby 4 times.The number is
Question 1:The smallest odd multiple of 9 is Question 2:K is a prime number and a multiple of 43. What is K?Answer: K Question 3:How many prime numbers are less than 10? Answer: There are numbers.Question 4:P is a prime number and a factor of 8. What is P?Answer: P Question 5:A prime number between 42 and 46 is Question 6:In the following numbers, which has the most factors?Answer: Question 7:The number 55 has factors.Question 8:Find the sum of all the factors of 15Answer: Question 9:How man...
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Question 1:
The smallest odd multiple of 9 is
Question 2:
K is a prime number and a multiple of 43. What is K?
Answer: K =
Question 3:
How many prime numbers are less than 10?
Answer: There are numbers.
Question 4:
P is a prime number and a factor of 8. What is P?
Answer: P =
Question 5:
A prime number between 42 and 46 is
Question 6:
In the following numbers, which has the most factors?
Answer:
Question 7:
The number 55 has factors.
Question 8:
Find the sum of all the factors of 15
Answer:
Question 9:
How many times does the digit “0” appear in numbers from 1 to 1000?
Answer:
Question 10:
If m, n are consecutive odd numbers and is divisible by 3 and 5 then m =
Counting from 1 to 6666, how many numbers are there that have exactly two digits “6” and only one digit “7”?
Các bn giúp mk với
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97 là một số nguyên tố. Khi đảo ngược các chữ số, ta được một số mới cũng là một số nguyên tố. Ví dụ như 97 và 79 đều là số nguyên tố. Hỏi có tất cả bao nhiêu số nguyên tố có 2 chữ số có tính chất như thế? 97 is a prime number. When reversing the digits, we get a new number that is also a prime number. For example, 97 and 79 are prime numbers. So, how many 2-digit prime numbers have such properties?(A) 5 (B) 6 (C) 7 (D) 8 (E) 9
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97 là một số nguyên tố. Khi đảo ngược các chữ số, ta được một số mới cũng là một số nguyên tố. Ví dụ như 97 và 79 đều là số nguyên tố. Hỏi có tất cả bao nhiêu số nguyên tố có 2 chữ số có tính chất như thế? 97 is a prime number. When reversing the digits, we get a new number that is also a prime number. For example, 97 and 79 are prime numbers. So, how many 2-digit prime numbers have such properties?
(A) 5 (B) 6 (C) 7 (D) 8 (E) 9
Question 2:The number of factors of 120 isQuestion 5:Find four integer numbers a,b,c,d such thata + b + c + d 1a + c + d 2a + b + d 3a + b + c 4Answer: (a;b;c;d)() Question 6:The 215th term of the expression A1-7+13-19+25-31+⋯ isQuestion 7:A natural number will be increased by 9 times ifthe digit 0 is written between tens digit and units digit.The number isQuestion 8:Calculate: 1×2+2×3+⋯+100×101Question 9:The root of the equation (x+1)+(x+2)+(x+3)+⋯+(x+100)5750 is xQuestion 10:The sum of di...
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Question 2:
The number of factors of 120 is
Question 5:
Find four integer numbers a,b,c,d such that
a + b + c + d = 1
a + c + d = 2
a + b + d = 3
a + b + c = 4
Answer: (a;b;c;d)=()
Question 6:
The 215th term of the expression A=1-7+13-19+25-31+⋯ is
Question 7:
A natural number will be increased by 9 times ifthe digit 0 is written between tens digit and units digit.The number is
Question 8:
Calculate: 1×2+2×3+⋯+100×101=
Question 9:
The root of the equation (x+1)+(x+2)+(x+3)+⋯+(x+100)=5750 is x=
Question 10:
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
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
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?
using each of a digit 3,4,5 and 6 exactly once to form two 2 digit numbers .what is the different between the largest possible product and the smallest possible product of two such number
how many 3 digit numbers that are multiples of 6 in which the sum of hundreds digit and units and units digit is twice tens digit ?