TIMO Khối 8 – Vòng Quốc gia (Heat Round) – Đề số 4

If + + + = 17776 abcd bcda cdab dabc , calculate + + + a b c d .

Calculate: Tính

There are 22 problems in a mathematics competition. The scores of each problem are allocated in the following ways: 3 marks will be given for a correct answer, 1 mark will be deducted from a wrong answer and 0 marks will be given for a blank answer. Find the minimum number of candidate(s) to ensure that 2 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.

30th September, 2020 will be Wednesday. Which day of the week will 28th September, 2028 be?

September: Tháng 9; Wednesday: Thứ Tư; Day of the week: Thứ trong tuần.