TIMO Khối 8 – Vòng Quốc gia (Heat Round) – Đề số 5

There are some chickens and rabbits in a cage. The number of rabbits is 3 times less 16 as the number of chickens. The total number of rabbit legs is 186 more than that of chicken. How many rabbit(s) is / are there? 3 times less 16:

Gấp 3 lần và bớt 16 con;

Total: Tổng số

There are 25 problems in a mathematics competition. The scores of each problem are allocated in the following ways: 2 marks will be given for a correct answer, 1 mark will be deducted from a blank answer and 2 marks will be deducted from a wrong answer. Find the minimum number of candidate(s) to ensure that 3 candidates will have the same scores in the competition.

Allocated: Được quy định; Deducted: Bị trừ; Minimum number of candidates: Số thí sinh ít nhất;

Ensure: Chắc chắn rằng; Same scores: Cùng số điểm.

From the pattern shown below, what is the number in the blank with the question mark? 2 、 4 、 18 、 116 、 802 、 5604 、? 、…

Pattern: Quy luật; The blank: Chỗ trống.