Bạn chưa đăng nhập. Vui lòng đăng nhập để hỏi bài

Những câu hỏi liên quan
An Nguyễn Bá
Xem chi tiết
Kayoko
24 tháng 12 2016 lúc 14:28

Đơn vị tần số là héc, kí hiệu Hz

Pham Trong Bach
Xem chi tiết
Cao Minh Tâm
19 tháng 7 2018 lúc 15:13

Chọn B

Pham Trong Bach
Xem chi tiết
Cao Minh Tâm
16 tháng 4 2019 lúc 18:19

Chọn D

Pham Trong Bach
Xem chi tiết
Cao Minh Tâm
26 tháng 4 2017 lúc 10:53

Bảng tần số:

Chọn C

van thu
Xem chi tiết
Kậu...chủ...nhỏ...!!!
31 tháng 12 2021 lúc 21:16

B

Good boy
31 tháng 12 2021 lúc 21:17

B

Pham Trong Bach
Xem chi tiết
Cao Minh Tâm
14 tháng 6 2019 lúc 15:33

Chọn C

Pham Trong Bach
Xem chi tiết
Cao Minh Tâm
30 tháng 9 2019 lúc 4:41

Chọn A

hoàng hữu Mạnh
Xem chi tiết
Pham Trong Bach
Xem chi tiết
Cao Minh Tâm
8 tháng 1 2018 lúc 14:32

Đáp án A

Thí sinh thi được 26 điểm do đó có 6 phương án đúng và 4 phương án sai

Xác suất cần tìm sẽ là:

=>  Chọn phương án A.

Chú ý: Công thức tổng quát cho bài toán n câu hỏi và a đáp án đúng sẽ là

 

Trương Hoàng Bách
4 tháng 2 lúc 15:12

CHỊUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU