Q. A group of 7 members having a majority of boys is to be formed out of 6 boys and 4 girls. The number of ways the group can be formed is

View solution

Q. The number of observations in a group is 40. The average of the first 10 members is 4.5 and the average of the remaining 30 members is 3.5. The average of the whole group is

View solution

Q. The sum of the ages of two persons A and B is 50. 5 years ago, the ratio of their ages was 5/3. The present age of A and B are

View solution

Q. Let a means minus (–), b means multiplied by (ᵡ), C means divided by (÷) and D means plus (+). The value of 90 D 9 a 29 C 10 b 2 is

View solution

Q. Which is the number that comes next in the following sequence?
2, 6, 12, 20, 30, 42, 56, …………

View solution

Q. The price of petrol increases by 25%. By what percentage must a customer reduce the consumption so that the earlier bill on the petrol does not alter?

View solution

Q. If Ram knows that y is an integer greater than 2 and less than 7 and Hari knows that y is an integer greater than 5 and less than 10, then they may correctly conclude that

View solution

Q. Four pipes can fill a reservoir in 15, 20, 30 and 60 hours respectively. The first one was opened at 6 AM, second at 7 AM, third at 8 AM and the fourth at 9 AM. When will the reservoir be filled ?

View solution

Q. What is the number that comes next in the sequence?
2, 5, 9, 19, 37, __

View solution

Q. If the side of the square increases by 40%, then the area of the square increases by

View solution

Q. There are 10 lamps in a hall. Each one of them can be switched on independently. The number of ways in which hall can be illuminated is

View solution

Q. How many numbers between 100 and 300 begin or end with 2?

View solution

Q. In a college having 300 students, every student reads 5 newspapers and every newspaper is read by 60 students. The number of newspapers required is

View solution

Q. Find the wrong number in the sequence
125, 127, 130, 135, 142, 153, 165

View solution

Q. The price of oil is increased by 25%. If the expenditure is not allowed to increase, the ratio between the reduction in consumption and the original consumption is

View solution

Q. How many 8’s are there in the following sequence which are preceded by 5 but not immediately followed by 3?

5 8 3 7 5 8 6 3 8 5 4 5 8 4 7 6 5 5 8 3 5 8 7 5 8 2 8 5

View solution

Q. If a rectangle were called a circle, a circle a point, a point a triangle and a triangle a square, the shape of a wheel is

View solution

Q. Find the wrong number in the sequence :
52, 51, 48, 43, 34, 27, 16

View solution

Q. In a certain code, PAN is written as 31 and PAR as 35, then PAT is written in the same code as

View solution

Q. If 5472 = 9, 6342 = 6, 7584 = 6, what is 9236 ?

View solution