CTET Solved Paper - UPTET October 2017 Paper2
81. When x3+1 is divided by x-1, then what is the remainder?
- Option : C
- Explanation : (C) Let p(x) = x13+1 and
x-1 = 0 ⇒ x=1, then by remainder theorem
p(1) = (1)13+1 = 1+1 = 2
82. If A and B are non-empty subsets of a set C, then A ∪ (A ∩ B) is equal to
- Option : C
- Explanation : (C) Given, A and B are non-empty subsets of C
⇒ A ⊆ C and B ⊆ C
Now, A ∪ (A ∩ B) = A
