TN 12TH MATHS - Online Test
Q1. A polynomial equation in x
of degree n always has
Answer : Option C
Explaination / Solution:
A polynomial of degree n always has n roots
Q2. 
is equal to
is equal to
Answer : Option C
Explaination / Solution:
Q3. Consider a game where the player tosses a
six-sided fair die. If the face that comes up is 6, the player wins ₹ 36, otherwise he loses ₹ k 2
, where k is the face that comes up k
= {1, 2, 3, 4, 5}. The expected amount to win at this game in ₹ is
Answer : Option B
Explaination / Solution:
Q4. The circle x2 +
y2 = 4x + 8 y + 5 intersects the line 3x −
4 y = m at two distinct points if
Answer : Option D
Explaination / Solution:
Q5. Which one of the following is a binary operation
on ℕ?
Answer : Option B
Explaination / Solution:
No Explaination.
Q6. If 
, then the value of [
] is
, then the value of [] is
Answer : Option A
Explaination / Solution:
No Explaination.
Q7. A stone is thrown up vertically. The height it
reaches at time t seconds is given by x =
80t −16t2 . The stone reaches the maximum height in time t seconds is given by
Answer : Option B
Explaination / Solution:
Q8. if 
, then A =
, then A =
Answer : Option C
Explaination / Solution:
Q9. If v (
x, y ) = log(ex + ey
) , then ∂v/∂x + ∂y/∂v is equal to
Answer : Option D
Explaination / Solution:
Q10. The conjugate of a complex
number is 1/i-2 Then, the complex number is
Answer : Option B
Explaination / Solution:
