Question 3
Evaluate $20-1+19-2+18-3+\ldots+11-10$
PIMSO 2023 - Mathematics - Grade 9 (Secondary 3) - National Round Question 3
PIMSO Maths · PIMSO 2023 - Mathematics - Grade 9 (Secondary 3) - National Round
PIMSO Maths · PIMSO 2023 - Mathematics - Grade 9 (Secondary 3) - National Round