In a class of 78 students, 33.33% are girls and the remaining are boys. The average of the boys’ marks is 77 and that of average of whole class is 65. What are the average marks of the girls? (a) 51.5 (b) 41 (c) 43.25 (d) 53 Sol: Boys: Girls 52 : 26 2 : […]
A man alternatively tosses a coin and throws a dice beginning with the coin. The probability that he gets a head in the coin before he gets a 5 or 6 in the dice is? (a) 3/4 (b) 1/2 (c) 1/3 (d) 1/7 Sol:
The top of two trees of height 75 metres and 45 metres are connected by a wire. If the rope makes an angle with the horizontal whose tangent is 6/13 metres, then what is the distance (in metres) between the two trees? (a) 60 (b) 24 (c) 55 (d) 65 Sol: 6→ 30 (75 –
A polygon has 77 diagonals. Then what is the number of sides of the same polygon? (a) 11 (b) 15 (c) 14 (d) 16 Sol:
A polygon has 77 diagonals. Then what is the number of sides of the same polygon Read More »
A cylindrical vessel of radius 20.3 m is full of water. If 10749662 liters of water is taken out from it, then find the drop in the water level in the vessel. (a) 9.2 (b) 9.4 (c) 8.3 (d) 6.8 Sol: Volume of cylindrical vessel = πr²h ATQ, ∵ Drop in water level is equal
In a mixture, milk and water are in ratio of 2:3. Some milk is added to the mixture because of which ratio of milk and water becomes 2:1. How much milk was added as a percentage of initial mixture? (a) 75% (b) 60% (c) 80% (d) 50% Sol:
Dev, Neeraj and Pankaj ma ke ten mocks in 25 days. If efficiency of Dev and Pankaj together three times the Neeraj and Dev and Neeraj together are two times of Pankaj then in how many days Neeraj complete ten mocks? (a) 100 days (b) 80 days (c) 120 days (d) 90 days Sol:
A square is divided into four rectangles as shown in the figure. The lengths of the sides of the rectangles are natural numbers. the area of two rectangles are indicated in the figure, what is of of area of the square (a) 240.25 (b) 420.25 (c) 306 (d) None of these Sol: Factors of 110 =
If compound interest received on a certain amount in the 2nd year is Rs 250. What will be the compound interest for the 3rd year on the same amount at 16% rate of interest? (a) 260 (b) 266 (c) 280 (d) 290 Sol:
Two water taps together can fill a tank in 75/8 hr. the tap of larger diameter takes 10 hours less than the smaller one to fill the tank separately. Find the time in which each tap can separately fill the tank? (a) 20hr,10hr (b) 17hr,7hr (c) 25hr,15hr (d) 23hr,13hr Sol:
