cho hỏi tý đánh dấu bài thi là trừ nhiêu điểm
1+1=
K
Khách
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Những câu hỏi liên quan
CA
18 tháng 10 2018
(=) 2x.24+2x=34
(=) 2x.(16+1)=34
(=) 2x.17 =34
(=) 2x =2
=) x = 1
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18 tháng 10 2018
Các số từ 1 đến 9 có 9 chữ số.
Các số từ 10 đến 99 có 90 số và có số chữ số là: 90 x 2 = 180 chữ số
Số 100 có 3 chữ số nên sẽ cần số chữ số là: 9 + 180 + 3 = 192 chữ số
Đáp số: 192 chữ số
Chúc bạn học tốt!
MT
19 tháng 6 2015
chỉ cần lấy 4 chiếc vì 1 đỏ, 1 xanh, 1 tím và 1 chiếc nữa màu nào thì ta cũng có đủ 1 đôi tất
https://www.facebook.com/permalink.php?id=258560884174399&story_fbid=848355371861611
19 tháng 6 2015
Tý phải lấy 4 chiếc để chắc chắn có 1 đôi tất cùng màu vì nếu lấy 3 hoặc 2 chiếc thì vẫn có thể cả 3 hoặc 2 chiếc đó thuộc các màu khác nhau (vì có 3 màu). Khái quát lên, nếu có N màu thì phải lấy N+1 chiếc để chắc chắn có hai chiếc cùng màu
NK
5 tháng 2 2016
Ít nhất Tý phải lấy ra 4 chiếc tất,vì:
Khi lấy số tất là 3 chiếc thì sẽ có trường hợp là 3 chiếc tất khác nhau
Khi lấy số tất là 2 chiếc thì sẽ có thể là 2 chiếc tất khác màu
Không thể lấy 1 chiếc tất vì như thế không đủ 1 đôi
Vì đề cho Tý phải lấy ít nhất nên ta không thể chọn số tất >4 chiếc
Vậy số tất ít nhất Tý phải lấy ít nhất 4 chiếc tất để chắc chắn có 1 đôi tất cùng màu.
6 tháng 2 2016
4 chiếc !
ai jup em đạt mục tiêu hết âm trong năm nay với
23 tháng 2 2016
Tý cần phải lấy ít nhất 4 chiếc vì sẽ có nhiều nhất 3 chiếc khác nhau
TL :
1 + 1 =2
trừ 25% số điểm...
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