51)The A.M. of 30 students is 42. Among them, two students got zero marks. Then A.M. of the remaining students is
52)The median of 17, 31, 12, 27, 15, 19, 23 is
53)Mode of A, B, C, D ….. Z is
54)The value of sinθ or cosθ never exceeds
55)In the figure, the value of cosec A is
C)
Explanation:From the figure: triangle with sides 5, 12, 13 → right-angled at B
cosec A = hypotenuse / opposite = 13 / 12
Answer:
A) 
B) 
C) 
D) 
View Answer
C)
Explanation:From the figure: triangle with sides 5, 12, 13 → right-angled at B
cosec A = hypotenuse / opposite = 13 / 12
Answer:
56)If a two digit number is choosen at random then the probability that number choosen is a multiple of 3
B)
Explanation:Two-digit numbers: 10 to 99 → Total = 90
Multiples of 3 in this range = from 12 to 99 = 12, 15, …, 99
This is an AP with a = 12, d = 3
Use formula: nth term = a + (n-1)d
99 = 12 + (n-1)×3 ⇒ n = 30
Probability = 30 / 90 = 1/3
Answer:
A) 
B) 
C) 
D) 
View Answer
B)
Explanation:Two-digit numbers: 10 to 99 → Total = 90
Multiples of 3 in this range = from 12 to 99 = 12, 15, …, 99
This is an AP with a = 12, d = 3
Use formula: nth term = a + (n-1)d
99 = 12 + (n-1)×3 ⇒ n = 30
Probability = 30 / 90 = 1/3
Answer:
57)p(x)+P(“not x”)=
58)If cotθ= then =
B)
Explanation:Given cotθ = b/a ⇒ cosθ = a/√(a² + b²), sinθ = b/√(a² + b²)
Then,
Answer:
then 
=
A) 
B) 
C) 
D) 
View Answer
B)
Explanation:Given cotθ = b/a ⇒ cosθ = a/√(a² + b²), sinθ = b/√(a² + b²)
Then,
Answer:
59)The angle of elevation of the top of a tower, whose height is 100 m, at a pint whose distance from the base of the tower is 100 m is
60)The value of = …….
A) 0
Explanation:
= …….
View Answer
A) 0
Explanation:
Your Score: 0 / 0