For real number R out of the following, which is not correct ?(A) N ⊂ R (B) (a, b) ⊂ R, a < b (C) π ∉ R (D) f ⊂ R

For real number R out of the following, which is not correct ?(A) N �

1.	For real number R out of the following, which is not correct ?(A) N ⊂ R (B) (a, b) ⊂ R, a < b (C) π ∉ R (D) f ⊂ R
Answer» For real number R out of the following, which is not correct ? (A) N ⊂ R (B) (a, b) ⊂ R, a < b (C) π ∉ R (D) f ⊂ R