1. How many terms are there in the expression 2x²y?
2. How many terms are there in the expression 2y + 5?
3. How many terms are there in the expression 1.2ab - 2.4b + 6a?
4. How many terms are there in the expression - 2p³ - 3p² + 4p + 7?
5. What is the coefficient of x in the expression 4x + 3y?
6. What is the coefficient of x in the expression 2 - x + y?
7. What is the coefficient of x in the expression y²x + y?
8. What is the coefficient of x in the expression 2z - 3xz?
9. What is the coefficient of x in the expression 1 + x + xz?
10. What is the coefficient of x in the expression 2x + xy²?