The average wages of 500 workers were found to be 200. Later on, it was discovered that the wages of two workers were misread as 180 and 20 instead of 80 and 220. The correct average wages are: 

The area ( in m² ) of the square which has the same perimeter as a rectangle whose length is 48 m and is 3 times its breadth is : 

If there are four lines in a plane, then what cannot be the number of points of intersection of these lines? 

The least multiple of 13, which on dividing by 4, 5, 6, 7 and 8 leaves remainder 2 in each case is 

A boy added all natural numbers from 1 to 10, however, he added one number twice due to which the sum becomes 58. What is the number which he added twice? 

Ratio between two numbers is 3: 4. Product of their H.C.F and L.C.M is 2028. Find sum of the numbers. 

A clock is set right at 8 a.m. on Sunday. It gains 8 minutes in 24 hours. What is the correct time when the clock indicates 9 p.m. on upcoming Sunday? 

A and B can do a piece of work in 20 days and 12 days respectively. A started the work alone and then after 4 days B joined him till the completion of the work. How long did the work last?