For the picture shown above, which one of the following is the correct picture representing reflection with respect to the mirror shown as the dotted line?

A survey of 450 students about their subjects of interest resulted in the following outcome.

$$\bullet$$ 150 students are interested in Mathematics.

$$\bullet$$ 200 students are interested in Physics.

$$\bullet$$ 175 students are interested in Chemistry.

$$\bullet$$ 50 students are interested in Mathematics and Physics.

$$\bullet$$ 60 students are interested in Physics and Chemistry.

$$\bullet$$ 40 students are interested in Mathematics and Chemistry.

$$\bullet$$ 30 students are interested in Mathematics, Physics and Chemistry.

$$\bullet$$ Remaining students are interested in Humanities.

Based on the above information, the number of students interested in Humanities is

Consider the following equations of straight lines :

Line L1 : 2x $$-$$ 3y = 5

Line L2 : 3x + 2y = 8

Line L3 : 4x $$-$$ 6y = 5

Line L4 : 6x $$-$$ 9y = 6

Which one of the following is the correct statement?

Given the statements :

$$\bullet$$ P is the sister of Q.

$$\bullet$$ Q is the husband of R.

$$\bullet$$ R is the mother of S.

$$\bullet$$ T is the husband of P.

Based on the above information, T is _________ of S.