The probabilities of solving a problem by three students A, B and C are
(A)
(B)
(C)
(D)
In 5 years, the simple interest on an amount of Rs. X is
(A) 12%
(B) 8%
(C) 10%
(D) 5%
The difference between the length of two parallel sides of a trapezium is 12 cm. The perpendicular distance between these two parallel sides is 60 cm. If the area of the trapezium is 1380 cm2, then find the length of each of the parallel sides (in cm).
(A) 27, 15
(B) 31, 19
(C) 29, 17
(D) 24, 12
For a sample data, mean = 60 and median = 48. For this distribution, the mode is:
(A) 18
(B) 48
(C) 36
(D) 24
The ratio of the number of coins of 25 paise, 50 paise, Rs.2 and Rs.5 is 5 ∶ 4 ∶ 3 ∶ 1, respectively. If the total amount of the coins is Rs.285, then the difference between the number of 25 paise and Rs.5 coins is:
(A) 80
(B) 30
(C) 40
(D) 60
The average marks obtained by Saloni in four papers is 51, and in the fifth paper she gets 56 marks. Find her new average in all five papers.
(A) 51
(B) 52
(C) 49
(D) 50
A and B can complete a work together in 48 days. A is 4 times as work efficient as B. In how many days can B alone complete the work?
(A) 220 days
(B) 320 days
(C) 240 days
(D) 120 days
If 4x2 + y2 = 40 and xy = 6, then find the value of 2x + y.
(A) 6
(B) 8
(C) 5
(D) 4
Find the exact value of cos 1200.
(A) 1
(B) 0
(C) -0.5
(D) 0.5
The centroid of an equilateral triangle PQR is L. If PQ = 6 cm, the length of PL is:
(A)
(B)
(C)
(D)
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