Mathematics - Online Test
Q1. If n(A×
B) = 6 and A = {1, 3} then n(B) is
Answer : Option C
Explaination / Solution:
Q2. The order and degree of the differential
equation 
are respectively
are respectively
Answer : Option A
Explaination / Solution:
Q3. A zero of x3 + 64 is
Answer : Option D
Explaination / Solution:
Q4. If A and B are two sets, then {tex}A \cap (A \cup B)'{/tex} is equal to
Answer : Option C
Explaination / Solution:
{tex}A \cap (A \cup B)' = \phi {/tex}
since {tex}(A \cup B)'{/tex} Set represent the element which are not belongs to it,so there is no common element with the set A.So the answer is null set
Q5. The value of 2 + 4 + 6 +…….+ 2n is
Answer : Option D
Explaination / Solution:
Q6. Euclid’s division lemma
states that for positive integers a and b, there exist unique
integers q and r such that a = bq + r ,
where r must satisfy.
Answer : Option C
Explaination / Solution:
No Explaination.
Q7. The value of sin−1 (cos x), 0 ≤ x ≤ π is
Answer : Option C
Explaination / Solution:
Q8. The complex numbers z = x + iy which satisfy the equation lie on
Answer : Option D
Explaination / Solution:
Q9. Let A = 
, then Det. A is
, then Det. A is
Answer : Option B
Explaination / Solution:
( since C1 and C2 are identical)
( since C1 and C2 are identical)
Q10.
Let x be random
variable with probability density function
Answer : Option B
Explaination / Solution:
