Question 3
Evaluate $30-11+29-12+28-13+\ldots+21-20$
PIMSO 2023 - Mathematics - Secondary 4 / Grade 10 - National Round Question 3
PIMSO Maths · PIMSO 2023 - Mathematics - Secondary 4 / Grade 10 - National Round
PIMSO Maths · PIMSO 2023 - Mathematics - Secondary 4 / Grade 10 - National Round