Kiran Expert Team Solutions for Exercise 2: NUMERICAL APTITUDE

If a sum of money at a certain rate of simple interest per year doubles in 5 years and at a different rate of simple interest per year becomes three times in 12 years, then the difference in the two rates of simple interest per year is?

A clock strikes once at 1 o'clock, twice at 2 o'clock and thrice at 3 o'clock and so on. If it takes 8 seconds to strike at 5 o'clock, the time taken by it to strike at 10 o'clock is:

In what time, at $10\%$ simple interest will a sum of money triple itself?

Two pipes A and B can fill a tank in $6$ hours and $8$ hours respectively. If both the pipes are opened together, then after how many hours should B be closed so that the tank is full in $4$ hours? 

A dishonest shopkeeper, using a faulty balance makes a profit of 5% while buying as well as while selling his goods. His actual gain percent in the whole process amounts to:

What will be the remainder when ${252}^{126} + {244}^{152}$is divided by $10$? 

If $3$ article are sold for the cost of $5$ articles, then the profit percentage is:

Which of the following fraction does not lie between $\frac{5}{6}$ and $\frac{8}{15}$?