CBSE - Aptitude Mathematics

A can finish a work in 24 days, B in 9 days and C in 12 days. B and C start the work but are forced to leave after 3 days. The remaining work is done by A in 1) 5 days 2) 6 days 3) 10 days 4) 10 1/2 days

The mean of the following numbers 3,8,5,11,8,4,7,2,8,9 is 1. 7.5 2. 6.5 3. 8.5 4. 9.5

A person on tour has Rs.360 for his daily expenses. If he extends his tour for 4 days, he has to cut his daily expenses by Rs.3. Find the original duration of the tour. 1. 15 days 2. 30 days 3. 20 days 4. 24 days

In a distribution, the mean deviation is 360, the median is 16 then coefficient of mean deviation from median is 1.20.0 2.22.5 3.25.0 4.none of these

If the annual decrease in the population of a city be 2 percent and the present number of inhabitants be 375000, what Will the population be 3 years hence (1) 362048 (2) 352947 (3) 152947 (4) NONE