# If θ is the angle between the vectorsthen sin θ is equal to:

1.  2/7

2.  2/√7

3.  √2/7

4.  √(5/21)

4

√(5/21)

Explanation :
No Explanation available for this question

1.  √10

2.  1

3.  2

4.  √5

4

√5

Explanation :
No Explanation available for this question

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# Probability of choosing a number divisible by 6 or 8 from among 1 to 90 is

1.  1/6

2.  11/90

3.  1/30

4.  23/90

4

23/90

Explanation :
No Explanation available for this question

# The probabilities of two events A and B are 0.25 and 0.40respectively and P(A∩B) = 0.15. The probabilities that neither A nor B occurs is:

1.  0.35

2.  0.65

3.  0.5

4.  0.75

4

0.5

Explanation :
No Explanation available for this question

# The probability distribution of a random variable X is given below, then k is equal to

1.  0.1

2.  0.2

3.  0.3

4.  0.4

4

0.1

Explanation :
No Explanation available for this question

# Let X and Y be subsets of R which is the set of all real numbers, the function F: X→Y defined by F(x) =x2 for xεX is one-one but not onto if R+ is the set of all +ve real numbers, then

1.  X = Y= R+

2.  X=R, Y=R+

3.  X= R+, Y=R

4.  X=Y=R

4

X= R+, Y=R

Explanation :
No Explanation available for this question

# If F: R→Ris defined by f(x) =2x+|x|, then f(2x)+f(-x)-f(x) is equal to

1.  2x

2.  2|x|

3.  -2x

4.  -2|x|

4

2|x|

Explanation :
No Explanation available for this question

# If f: R→R and g: R→R are defined by f(x)=2x+3 and g(x)=x2+7, then the values of x for which f(g(x))=25, are

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

1.  1

2.  3

3.  6

4.  7

4