TM
2
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Khách
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Các câu hỏi dưới đây có thể giống với câu hỏi trên
YK
25 tháng 10 2015
Biết nhiều về con gái quá ha.Đến nỗi tui là con gái mà chẳng biết gì mấy bằng Tom Boy
Y
15 tháng 7 2015
Tuổi ông và tuổi cháu
Cộng lại sáu mươi lăm
Tuổi ông tính theo năm
Đúng bằng tháng tuổi cháu
1 năm = 12 tháng. Vậy tuổi cháu bằng \(\frac{1}{12}\)tuổi ông
Tuổi ông là:
65 / (12 + 1) * 12 = 60 (tuổi)
Đáp số: 60 tuổi
S
16 tháng 7 2016
Bài giải:
Phân số chỉ số tuổi còn lại sau thời niên thiếu của ông là :
1- 1/5 = 1/4 (số tuổi ông)
Thời sinh viên của ông có số năm là :
4/5 x 1/8 = 1/10 (số tuổi ông)
Số năm còn lại sau thời sinh viên của ông là :
4/5 - 1/10 = 7/10 (số tuổi ông)
Số năm học ở trường quân đội của ông là :
7/10 x 1/7 = 1/10 (số tuổi ông)
Do đó: 7 năm rèn luyện của ông là :
1 - (1/5 + 1/10 + 1/10 + 1/2) = 1/10 (số tuổi ông)
Suy ra số tuổi của ông là :
7: 1/10 = 70 (tuổi).
20 tháng 5 2021
dạ chào oog cháu xin trả lời 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20 tháng 5 2021
1 + 1 = 2
Nội qui tham gia "Giúp tôi giải toán"
1. Không đưa câu hỏi linh tinh lên diễn đàn, chỉ đưa các bài mà mình không giải được hoặc các câu hỏi hay lên diễn đàn;
2. Không trả lời linh tinh, không phù hợp với nội dung câu hỏi trên diễn đàn.
3. Không "Đúng" vào các câu trả lời linh tinh nhằm gian lận điểm hỏi đáp.
Các bạn vi phạm 3 điều trên sẽ bị giáo viên của Online Math trừ hết điểm hỏi đáp, có thể bị khóa tài khoản hoặc bị cấm vĩnh viễn không đăng nhập vào trang web.
K
11
1. Không đưa câu hỏi linh tinh lên diễn đàn, chỉ đưa các bài mà mình không giải được hoặc các câu hỏi hay lên diễn đàn;
2. Không trả lời linh tinh, không phù hợp với nội dung câu hỏi trên diễn đàn.
3. Không "Đúng" vào các câu trả lời linh tinh nhằm gian lận điểm hỏi đáp.
Các bạn vi phạm 3 điều trên sẽ bị giáo viên của Online Math trừ hết điểm hỏi đáp, có thể bị khóa tài khoản hoặc bị cấm vĩnh viễn không đăng nhập vào trang web.
II. Cách nhận biết câu trả lời đúng
Trên diễn đàn có thể có rất nhiều bạn tham gia giải toán. Vậy câu trả lời nào là đúng và tin cậy được? Các bạn có thể nhận biết các câu trả lời đúng thông qua 6 cách sau đây:
1. Lời giải rõ ràng, hợp lý (vì nghĩ ra lời giải có thể khó nhưng rất dễ để nhận biết một lời giải có là hợp lý hay không. Chúng ta sẽ học được nhiều bài học từ các lời giải hay và hợp lý, kể cả các lời giải đó không đúng.)
2. Lời giải từ các giáo viên của Online Math có thể tin cậy được (chú ý: dấu hiệu để nhận biết Giáo viên của Online Math là các thành viên có gắn chứ "Quản lý" ở ngay sau tên thành viên.)
3. Lời giải có số bạn chọn "Đúng" càng nhiều thì càng tin cậy.
4. Người trả lời có điểm hỏi đáp càng cao thì độ tin cậy của lời giải sẽ càng cao.
5. Các bài có dòng chữ "Câu trả lời này đã được Online Math chọn" là các lời giải tin cậy được (vì đã được duyệt bởi các giáo viên của Online Math.)
6. Các lời giải do chính người đặt câu hỏi chọn cũng là các câu trả lời có thể tin cậy được.
III. Thưởng VIP cho các thành viên tích cực
Online Math hiện có 2 loại giải thưởng cho các bạn có điểm hỏi đáp cao: Giải thưởng chiếc áo in hình logo của Online Math cho 5 bạn có điểm hỏi đáp cao nhất trong tháng và giải thưởng thẻ cào 50.000đ hoặc 2 tháng VIP cho 6 bạn có điểm hỏi đáp cao nhất trong tuần. Thông tin về các bạn được thưởng tiền được cập nhật thường xuyên tại đây.
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