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Có tất cả bao nhiêu số từ 4 - 1 chia hết cho 5

Write the words in number form which consist of: 7 hundred thousands, 6 thousands, 3 hundreds, 4 tens and 2 units.Answer: Câu 2:Fill in the sequence with the missing number in order to have 3 consecutive natural numbers.897;  ; 899Câu 3:Fill in the sequence with the missing number in order to have 3 consecutive natural numbers.; 87; 88Câu 4:How many single digit numbers are there?Answer:  numbers.Câu 5:6 is just after of 5 and 5 is just before of 6. What is the product of just after and just...
Đọc tiếp

Write the words in number form which consist of: 7 hundred thousands, 6 thousands, 3 hundreds, 4 tens and 2 units.
Answer: 

Câu 2:
Fill in the sequence with the missing number in order to have 3 consecutive natural numbers.
897;  ; 899

Câu 3:
Fill in the sequence with the missing number in order to have 3 consecutive natural numbers.
; 87; 88

Câu 4:
How many single digit numbers are there?
Answer:  numbers.

Câu 5:
6 is just after of 5 and 5 is just before of 6. What is the product of just after and just before of 10?
Answer: 

Câu 6:
Jean has 3014 beads. She has 497 beads less than Gillian. How many beads do they have altogether?
Answer: They have  beads altogether.

Câu 7:
There are 56 apples in a basket.  of them are green and the rest are red. How many red apples are there?
Answer: There are  red apples.

Câu 8:
The perimeter of a square garden is 36m. What is its area?
Answer: Its area is  .

Câu 9:
248 boys and 418 girls were divided into groups of 9. How many groups were there altogether?
Answer:  groups.

Câu 10:
Mr Junior bought 1 magazine, 1 book and 1 pen. The pen costs 5 dollar, the book costs 31 dollar more than the pen. The magazine costs twice as much as the book. How much did he spend on the three things?
Answer: He spent  dollar.

0
1 tháng 4 2016

81 bạn nha

9 tháng 10 2021

bạn ghi là 124 nhé

19 tháng 10 2021

OK IT IS RIGHT

13 tháng 2 2017

Nếu câu hỏi là thế này: Có bao nhiêu số có 1 chữ số?

Thì mình xin được trả lời:

Gọi ab là số tự nhiên cần tìm 
a có 9 cách chọn (từ 1 -> 9) 
b có 9 cách chọn (b khác a) 
Vậy có 9x9 = 81 số. 

Nếu tính cả số âm nữa thì: 
Gọi ab là số tự nhiên cần tìm 
a có 18 cách chọn (từ -9 -> 9 bỏ 0) 
b có 18 cách chọn (b khác a) 
Vậy có 18x18 = 324số