CBSE 11TH MATHEMATICS - Online Test
Q1. Which of the following statements is incorrect ?
Answer : Option B
Explaination / Solution:
which is not possible since is a periodic function whose value oscillates between -1 and 1
Q2.
The statement is true for all
Answer : Option A
Explaination / Solution:
When n = 1 8<3, is not true. When n = 2 16<9, is false. When n = 3 32<27, is not valid. But when n = 4 64<81, is true.
Q3. 8 coins are tossed at a time. The probability of getting atleast 6 heads up is
Answer : Option D
Explaination / Solution:
No Explaination.
Q4. Three planes x + y = 0 , y + z = 0 , and x + z = 0
Answer : Option B
Explaination / Solution:
Explanation:
x + y = 0 (1)
y + z = 0 (2)
x + z = 0 (3)
Subtracting 1 and 2 we get x-z=0 (4)
adding 3 and 4 we get x-0,y=0 and z=0
Q5. The number of ways of dividing 52 cards equally into 4 sets is
Answer : Option C
Explaination / Solution:
If 4n things are to form 4 equal groups then the numbers of ways are
Hence number of ways to divide 52 cards to form 4 groups of 13 cards each =
Q6.
If then is equal to
Answer : Option D
Explaination / Solution:
Q7. The index of the power of x that occurs in the term from the end in the expansion of is
Answer : Option C
Explaination / Solution:
Q8. Given the sets A = { 1, 2, 3 } , B = { 3 , 4 } , C = { 4 , 5, 6 } , then A ∪( B ∩ C ) is
Answer : Option C
Explaination / Solution:
Q9. If f (x) = is equal to
Answer : Option B
Explaination / Solution:
Q10. If | x − 2|= p, where x < 2, then x - p =
Answer : Option D
Explaination / Solution:
