How many 2-digit number(s) is / are there such that the number contains digit “3”?
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.
Mk dịch ra cho các bạn hiểu nè, chứ mình không biết làm, hì hì
Có bao nhiêu số tự nhiên có ba chữ số mà chữ số hàng chục bình phương bằng tổng của các chữ số khác và sự khác biệt giữa số lượng và thứ tự đảo ngược của nó là 495?
Trả lời: Có....số
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.
Mình không dịch được bài này. Bạn thông cảm nhé
choose 3 digits from 1, 3, 4, 5, 9 to form 3-digit numbers. how many number(s) that can be divisible by 5 is / are there?
choose 3 digits from 1, 3, 4, 5, 9 to form 3-digit numbers. how many number(s) that can be divisible by 5 is / are there?
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.
cái bài đó có 1 số là 661
(chắc chắn đúng đó)
A,B,C,D,A+C,B+C,A+D,B+D represent 8 diffirent natural numbers from 1 to 8. If A is the largest number in the number from 1 to 8.Find A
How many natural numbers are there between 100 and 999 that unit-digit and tens-digit equal hundreds-digit ?
ill in the blank with the suitable number
Question 1:
Find x such that x:6=13
Answer: x =
Question 2:
How many goldfish are there?
Answer: There are goldfish.
Question 3:
Convert: 6cm = mm
Question 4:
If x:5=32 then x =
Question 5:
There are six students in a drawing class. Each student draws a picture as same as the picture below. How many stars do they draw in all?
Answer: They draw stars in all.
Question 6:
The perimeter of the triangle below is cm
Question 7:
Jennifer has 4 chocolate boxes. There are 12 chocolate bars in each box. How many chocolate bars does she have?
Answer: She has chocolate bars.
Question 8:
Find y such that y:6=32:4
Answer: y =
Question 9:
A even 2 – digit number has a digit 4 in the tens place.It is greater than 46. What is it?
Answer: It is
Question 10:
The product of 40 and a number, m, is a 2- digit number that greater than 40. The value of m is
question 1: x=13x6=78
question 3:60 mm
question 4:x=32x5=160
question 7:16
Question 1 : x:6=13,x=13x6=78
Question 2 : ko có hình
Question 3 : 6cm=60mm
Question 4 :x:5=32,x=32x5=160
Question 5 : ko có hình
Question 6 : ko có hình
Question 7 : 12x4=48 chocolate bar
Question 8 : y:6=32:4,y:6=8,y=8x6=48
Question 9 : 48
Combinatorics
21. 15 students join a competition. Only top 5 students can be promoted to next round. How many different way(s) of promotion advance is / are there?
Different way: Cách khác nhau.
22. It is known that there are 8 classes of grade 5 in a primary school. At least how many students are there in grade 5 to ensure there exist 41 students in the same class?
At least: Ít nhất; Ensure: Chắc chắn; Exist: Tồn tại.
23. Choose 3 digits from 1, 2, 3, 4, 6, 8 and 0 to form 3-digit numbers. How many even number(s) greater than 300 is / are there? (The repetition of digits is not allowed)
Digit: Chữ số; 3-digit number: Số có 3 chữ số; Even number: Số chẵn; Greater than: Lớn hơn; Repetition of digits is not allowed: Các chữ số không được lặp lại.
24. A flight of stairs has 10 steps. Peter can go up for 1 step, 2 steps or 3 steps each time. How many way(s) is / are there for Peter to go up the stairs?
Step: Bước; Way: Cách.
25. Numbers are drawn from 80 integers 20 to 99. At least how many number(s) is / are drawn at random to ensure that there are two numbers whose sum is 85?
Integer: Số nguyên; At least: Ít nhất; Random: Ngẫu nhiên; Ensure: Chắc chắn; Sum: Tổng.
~ End of Paper ~
là seo pạn?mik hem hỉu??????????????????????
Đọc cái bài mà mún trầm kẻm!
Combinatorics
21. 15 students join a competition. Only top 5 students can be promoted to next round. How many different way(s) of promotion advance is / are there?
Different way: Cách khác nhau.
22. It is known that there are 8 classes of grade 5 in a primary school. At least how many students are there in grade 5 to ensure there exist 41 students in the same class?
At least: Ít nhất; Ensure: Chắc chắn; Exist: Tồn tại.
23. Choose 3 digits from 1, 2, 3, 4, 6, 8 and 0 to form 3-digit numbers. How many even number(s) greater than 300 is / are there? (The repetition of digits is not allowed)
Digit: Chữ số; 3-digit number: Số có 3 chữ số; Even number: Số chẵn; Greater than: Lớn hơn; Repetition of digits is not allowed: Các chữ số không được lặp lại.
24. A flight of stairs has 10 steps. Peter can go up for 1 step, 2 steps or 3 steps each time. How many way(s) is / are there for Peter to go up the stairs?
Step: Bước; Way: Cách.
25. Numbers are drawn from 80 integers 20 to 99. At least how many number(s) is / are drawn at random to ensure that there are two numbers whose sum is 85?
Integer: Số nguyên; At least: Ít nhất; Random: Ngẫu nhiên; Ensure: Chắc chắn; Sum: Tổng.
~ End of Paper ~