Which among the following is equivalent to `r harr s` ?

Which of the following is logcially equivalent to ~ ( p harr q) ?

Which of the following is logically equivalent to ~(p harr q) ?

Which one among the following is the equivalent weight of sulphuric acid ? (Atomic weight : H=1, S=32, O=16)

Let A = {p, q, r}. Which of the following is an equivalence relation on A?

Let A = {p, q, r}. Which of the following is an equivalence relation on A?

Let A = {p, q, r}. Which of the following is an equivalence relation on A?

Let A = {p, q, r}. Which of the following is an equivalence relation on A?