A person who is not easily pleased or satisfied

 The product of 3×2 matrix and 2×3 matrix will result in what order matrix? 

The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is:

The average age of a group of men is increased by 5 years when a person aged 18 years is replaced by a new person of age 38 years. How many men are there in the group?

 A rhombus has one of its diagonal 60% of the other. A square is drawn using the longer diagonal as side. What will be the ratio of the area of the square to that of the rhombus? 

A company has to deliver tea bags. The work is completed by 15 people in 24 days. If the number of hours per day is reduced in the ratio 5:4, in how many days can 18 people do the same work?

If 2 alarm clocks ring their alarms at regular intervals of 50 seconds and 48 seconds, and they first beep together at 12 noon, at what time will they beep again for the first time?

In a group of 80 children and 10 youngsters, each child got sweets that are 15% of the total number of children, and each youngster got sweets that are 25% of the total number of children. How many sweets were there in total?

A person goes to his office at 1/3 of the speed at which he returns from his office. If the average speed during the whole trip (i.e., one round) is 12 km/hr, what is the speed of the person while going to his office?

The present population of a town is 35,000, consisting of males and females. If the population of males is increased by 6% and the population of females is increased by 4%, then after 1 year the total population becomes 36,700. Find the number of males and females in the town.