đề bài là gì vậy
Một dãy vô hạn các số 1, 2, 3, 5, 8, 3, 1, 4, 5, 9, 4, ... theo sau bài toán sao cho bắt đầu từ số thứ ba, mỗi số bằng hàng đơn vị của tổng của hai số trong dãy liền trước nó. Số thứ 2019 của dãy là bao nhiêu? =)
Integers from 1 to 20 inclusive are written on the board.Any 2 numbers on the board are erased and then the sum of the two erased number are written on the board.This process is repeated exactly 18 times.Now there are just 2 numbers left on the board,so that one is 6 times the other.Find the smallest number of the two.Dịch cho mik với nha!
The sum of two numbers is the greatest 2 - digit number and their difference is 13. The greater number is ..........
Exam number 1: Đi tìm kho báu
Question 1: There are 40 students in Mrs. Brown's class. 25% of her students received a B on the test. How many students received a B?
a. 10 b. 12 c. 18 d. 20
Question 2: What is the product of 3.05 and 2.8?
a. 8.54 b. 8.056 c. 8.56 d. 8.054
Question 3: A clothing shop is having a 40% off sale. How much would Jane have to pay for a $30 sweater with a 40% discount?
a. $18 b. $20 c. $50 d. $13
Question 4: If a pen costs $1.75 and an eraser costs $0.85, which of the following is the cost of 10 erasers and 5 pens?
a. $21.75 b. $26 c. $18.75 d. $17.25
Question 5: If the area of the rectangle ABCD is 60cm2 then the area of the trapezoid MNCD is ..........cm2.
a. 48 b. 50 c. 45 d. 54
Exam number 2: Tìm cặp bằng nhau
Exam number 3: Fill in the blank with the suitable number
Question 1 The length of each edge of a cube is 3 cm. The surface area of the cube, in cm2, is .............
Question 2: At the beginning of the summer, Bob was 140 cm tall. At the end of the summer, he measured his height again and discovered that it had increased by 5%. Measured in cm, what was his height at the end of summer?
Question 3: The number of centimetres in 7.05 metres is ...............
Question 4: Bella scores on six of her eight pictures. The percentage of pictures that she does not score on is .........%.
Question 5: A bag contains green marbles and red marbles only. If the ratio of the number of green marbles to the number of red marbles is 1:4 then ............% of marbles are green.
Question 6: How many even numbers between 1 and 100 are divisible by 5?
Question 7: Alice is going to the store. One third of the way to the store, she stops to talk with Kelly. She then continues for 6 km and reaches the store. How many kilometres does she travel?
Question 8: How many three-digit numbers are exactly 19 more than a two-digit number?
Question 9: In the 3×3 table shown, the numbers 2, 4 and 6 are placed so that each number occurs only once in each row and only once in each column. The value of M + N is ............
Question 10: How many different 3-digit whole numbers can be formed using the digits 4, 5, 0 and 8, assuming that no digit can be repeated in a number?
the sum of two number is equal to77
Toby wrote down numbers from 1 to 100 on the whiteboard. Which digit appeared the least number of times?
Can anyone solve this question in English?
Find a fraction , knowing that the fraction in equal to the fraction 2/5 and when adding to the numerator and subtracting from the denominator of that fraction by a natural number we get the fraction 23/41
1. This picture is……………………. than the one in the living room. ( beautiful)
2. My mom always …………………….. taking a lot of photos. ( like)
3. Her dad …………………………… to the gas station last night. ( go)
4. I think bike number three is the ……………………. ( bad)
5. I ………. an normal plane in the future. ( not go)
6. We ……………………… the email for you tomorrow. ( send)
7. I use the cell phone …………………..to my friends. ( speak)
8. Why don’t you …………………. a bowling party? ( have)
9. This is the ………………………. student in my class. ( good)
10. Jimmy and Anna……………………. karaoke in the living room right now. (sing)
Find the greatest 3 digit number such that the product of its digits is 432
For fraction 14/20. Find the natural number known as the denominator in the denominator and keep the atomic number, which is given a new fraction of 1/4.
