the smallest number that has 5 odd factors is.............
Tìm số tự nhiên nhỏ nhất có 5 thừa số lẻ ?
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The smallest number that has 5 factors.................
Tìm số tự nhiên nhỏ nhất có đúng 5 ước?
Gọi số tự nhiên đó là n
Phân tích n ra thừa số nguyên tố là n = ax.by.cz.... ( trong đó a; b; c là số nguyên tố; x; y; z; ..> 0)
=> Số các ước tự nhiên của n là (x + 1)(y + 1).(z+1)...= 5 = 1.5
+) Nếu n = ax => x+ 1 = 5 => x = 4
Vì nhỏ nhất nên a = 2 => n = 24 = 16
+) Nếu n = ax.by => (x + 1)(y + 1) = 1.5 => x + 1 = 1; y + 1 = 5 (có thể coi x < y)
=> x = 0; y = 4 (Loại vì x > 0)
Vậy số đó là 16
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The smallest number that has 10 factors.
Tìm số tự nhiên nhỏ nhất có 10 ước
Số nhỏ nhất có 10 ước là
2(5-1) . 3(2-1) = 16.3 = 48
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The smallest number such that the product of all it's digits is 20 is .......?
Tìm số tự nhiên nhỏ nhất sao cho tích các chữ số của nó bằng 20?
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the smallest number that has 5 factors
The smallest number that has 5 factors?
The smallest number that has 10 factors is...................
the smallest number that has 7 factors is................
1. one factor of 31, beside 1
2. the number that has only two factor 1 and 7
3. the greatest factor of 38
4.the number of factor of 24
5. the smallest number that has 5 odd factor
6.
Question 1:K is a prime number and a multiple of 43. What is K?Answer: K Question 2:Which of following numbers is prime?Answer: Question 3:Which of following numbers is composite?Answer: .Question 4:The smallest odd multiple of 9 is Question 5:The number 55 has factors.Question 6:In the following figure, AN 5cm and AB 8cm. NB cm Question 7:Find the sum of all the factors of 19Answer: Question 8:In the following numbers, which has the most factors?Answer: Question 9:How many numbers from 1 t...
Đọc tiếp
Question 1:
K is a prime number and a multiple of 43. What is K?
Answer: K =
Question 2:
Which of following numbers is prime?
Answer:
Question 3:
Which of following numbers is composite?
Answer: .
Question 4:
The smallest odd multiple of 9 is
Question 5:
The number 55 has factors.
Question 6:
In the following figure, AN = 5cm and AB = 8cm. NB = cm
Question 7:
Find the sum of all the factors of 19
Answer:
Question 8:
In the following numbers, which has the most factors?
Answer:
Question 9:
How many numbers from 1 to 500 are multiple of 6?
Answer:
Question 10:
The largest possible whole number that is less than 120 and has only 2 and 5 as prime factors is