2.p: Eating Q: Watching TV p∧q

P: It rains Q: Playing ball p =>~ Q

P: It's raining Q: Go out p =>~ Q

You have gained wisdom. ~ q

Combine, combine

4. No, if both A and B are subsets of C, A and B are not necessarily equivalent. ..

5.r(x):x likes reading novels, and f(x):x likes all flowers.

(1) exists (x)r(x)

(2)~ existence (x)~r(x)

(3) there is (x)f(x)

6.r(x):x is a rational number, s(x):x is a real number, and t(x):x is an integer.

(any(x)r(x)= & gt； S(x))∧ (existence (x) r (x) = > T(x))= > (there is (x) s (x) = > t(x))

7. That is, the common multiple of these three numbers is 105, so there are two.

There are 100 divisible by three, 60 divisible by five and 20 divisible by 15.

So * * * has 100+60-20-2= 138.

8. Draw your own picture

9. Closed, closed and unary are two, and any element X has its inverse 4-x, so it is a group.

10. The degree of a point is n- 1 at most, so it is obviously impossible to reach n, so it cannot be formed.

1 1.A55*C6 1*C5 1=3600