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The base of a triangle is 15 cm and height is 12 cm. Find the height of another triangle of double the area whose base is 20 cm.
A18 cm
B20 cm
C24 cm
D30 cm
If sin(theta) = 5/13, find the value of tan(theta) + sec(theta).
A1.2
B1.5
C1.8
D2.0
If 60% of students in a school are boys and the number of girls is 480, find the total number of students in the school.
A1000
B1200
C1400
D1500
A box contains 6 white and 4 black balls. Two balls are drawn at random without replacement. What is the probability that both are white?
A1/3
B2/5
C7/15
D1/2
The ratio of the area of a square to that of the square drawn on its diagonal is:
A1 : 2
B1 : 4
C2 : 1
D1 : sqrt(2)
Simplify: (x^b / x^c)^(b+c) * (x^c / x^a)^(c+a) * (x^a / x^b)^(a+b).
A0
B1
Cx
Dx^(a+b+c)
In how many ways can 6 people be seated around a circular table?
A120
B240
C360
D720
Present ages of father and son are in ratio 7:2. After 10 years, ratio will be 9:4. What is the father’s present age?
A35 years
B42 years
C49 years
D56 years