11 3 ÷ 11 3 = 1,331
a. true
b. false

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

What is the area of the original rectangle? 8 cm² 20 cm² 25 cm² 40 cm²

Can you divide 25 into 4 equal groups? explain why or why not.