Find the wrong number in the sequence: 2, 4, 8, 3, 6, 27, 4, 16, 64
In what ratio must water be added to spirit to gain 20% by selling it at the cost price?
At what annual interest rate will a sum of money double in 10 years?
The present worth of a sum due sometime hence is Rs. 288, and the banker's gain is Rs. 32. The true discount is:
If the sum of the first 3 terms of a decreasing arithmetic progression (AP) is 90, and the product of the last two terms is 510, then the first term of the AP is:
Assume that two people are born each day of the year. If we consider the 20th century, what is the ratio of people born on February 29th to the total number of people born?
Two trains 140 m and 160 m long run at the speed of 60 km/hr and 40 km/hr respectively in opposite directions on parallel tracks. The time (in seconds) which they take to cross each other, is:
Noni can paint a room in 60 minutes, Karna can paint it in 30 minutes, and Raka can paint it in 20 minutes. How much time will they take to paint the same together?
The salaries A, B, C are in the ratio 2: 3: 5. If the increments of 15%, 10%, and 20% are allowed respectively in their salaries, then what will be the new ratio of their salaries?
The average weight of a four-member family is 48 kg. If the average weight of the second and third members is 34 kg, and the ratio of the weight of the first and fourth members is 3:1, what is the weight of the fourth member?