Mathematics - Online Test
Q1. Three of the 6 vertices of a regular hexagon are chosen at random .The probability that the triangle with these vertices is equilateral is
Answer : Option A
Explaination / Solution:
No Explaination.
Q2. The equation 
represents
represents
Answer : Option B
Explaination / Solution:
The equation 
which represent generally XY plane i.e the plane y=0
which represent generally XY plane i.e the plane y=0
Q3. If A and B are symmetric matrices of order n ( A≠ B), then
Answer : Option C
Explaination / Solution:
Sum of two symmetric matrices is also symmetric.
Q4. The value of the integral 
is equal to
is equal to
Answer : Option D
Explaination / Solution:
Q5. A convex polygon of n sides has n diagonals. Then value of n is
Answer : Option C
Explaination / Solution:
We have an n sided polygon has n vertices.
If you join every distinct pair of vertices you will get lines.
These lines account for the n sides of the polygon as well as for the diagonals.
So the number of diagonals is given by
But given number of sides = number of diagonals =n
Q6. Find the angle between the planes whose vector equations are 
Answer : Option A
Explaination / Solution:
Q7.
Forming a differential equation representing the given family of curves by eliminating arbitrary constants a and b from yields the differential equation
Answer : Option C
Explaination / Solution:
Q8. The equation 
Answer : Option D
Explaination / Solution:
Q9.
The sum of coefficients of 1st, 2nd, and 3rd in the expansion of is 46, find n
Answer : Option A
Explaination / Solution:
Q10. Which of the following is a set?
Answer : Option A
Explaination / Solution:
The set is{a,e,i,o,u}
