Practical lesson: logic and circuits
Answers are for parents and teachers.
1
Continue: 5, 10, 20, 40, ... and 1, 3, 7, 15, ... .
80 (×2) and 31 (each time ×2 + 1).
2
“All prime numbers are greater than 1. 13 is a prime number.” What follows?
13 is greater than 1.
3
Evaluate (2 + 3 = 5) ∧ ¬(4 > 6) ∨ (0 > 1).
1
4
Is x² + 1 > 0 always true? Why?
Yes: x² ≥ 0, so adding 1 gives at least 1.