Ai giúp mình với

1. Tính số xâu nhị phân có độ dài 10 trong các trường hợp sau:

     a. Có bit đầu và bit cuối cùng bằng 1.

     b. Có 2 bit đầu là 0 và 3 bit cuối bằng 1.

     c. Có số các bit 0 bằng số các bit 1.

     d. Có nhiều nhất bốn bit 1.

     e. Luôn có 4 bit 0.

Câu 16: Lúc lý tưởng để ăn trưa?

Câu 17: Có ba quả táo trên bàn và bạn lấy đi hai quả. Hỏi bạn còn bao nhiêu quả táo?

Câu 18: Bố mẹ có sáu người con trai, mỗi người con trai có một em gái. Hỏi gia đình đó có bao nhiêu người?

Câu 19: Nếu chỉ có một que diêm, trong một ngày mùa đông giá rét, bạn bước vào căn phòng có một cây đèn, một bếp dầu, và một bếp củi, bạn thắp gì trước tiên?

Câu 20: Có hai bình rộng miệng đựng đầy nước. Làm sao để cho tất cả nước vào trong một cái chậu mà vẫn biết nước nào của bình nào (không được cho cả bình hay bất kỳ dụng cụ đựng nước nào vào chậu)?
Bạn trả lời được câu nào thì bạn ví dụ: Câu 16:đáp án:...

Cho đồ thị hàm số $y=\cos x$ như hình vẽ sau:

Hàm số giảm trong khoảng nào dưới đây?

VVVVVVdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy itdid you enjoy it