4921.
The surface areas of two spheres are in the ratio 25 : 36. What is the ratio of their volumes?
(A)
(B)
(C)
(D)
4922.
What is the value of the following expression?
(A)
(B)
(C)
(D)
4923.
In a ∆ABC, two medians AD and BE intersect at G at right angles. If AD = 18 cm and BE = 12 cm, then the length of BD is
equal to:
(A)
10 cm
(B)
15 cm
(C)
8 cm
(D)
20 cm
4924.
A person drives 110 miles at 55 miles per hour, he drives the next 120 miles at 60 miles per hour, and then he drives the next
60 miles in an hour. What is his average speed for the entire journey in miles per hour ?
(A)
58
(B)
55
(C)
63
(D)
60
4925.
If 18 toys out of 75 toys are for boys and the rest are for girls, what is the percentage of girls toys?
(A)
18%
(B)
57%
(C)
67%
(D)
76%
4926.
In a circle, ABCD is a cyclic quadrilateral in which AE is drawn parallel to CD, and BA is produced to F. If ∠ABC = 85° and
∠FAE = 24°, find the value of ∠BCD.
(A)
125°
(B)
115°
(C)
124°
(D)
119°
4927.
Find the number when successively divided by 3,5and 7 leaves remainder 2,1and 3, respectively, and the last quotient is 3.
(A)
360
(B)
362
(C)
365
(D)
367
4928.
The respective ratio between numerical values of the curved surface area and the volume of a right circular cylinder is 2 : 3.
If the respective ratio between the radius and the height of the cylinder is 3 : 7, what is the total surface area of the cylinder?
(A)
(B)
(C)
(D)
4929.
(A)
(B)
(C)
(D)
4930.
The age of the older of two boys is thrice that of the younger. 9 years ago it was five times that of the younger. Find the
present age of each.
