If x + y = 3 and 2x + 5y = 12 then x = ......... and y = ..............
Find the roots of x2 – 6x + 5 = 0
What is the sixty percent of 60 percent of 100?
The population of a town increased arithmetically from one lakh to 1.5 lakh during a decade. Find the percentage of increase in population per year.
1/3 +1/6 -2/9 = ..........
Sum of sixty natural numbers from 1 onwards:
2 × 3 + 5 – 4 ÷ 2 + 6 × 7 + 82 = ...............
A train ............. metres long passes a platform of length 20 metres in 18 seconds at a speed of 64 km per hour. Find the length of the train.
A car travels at a speed of 60 km per hour from Ernakulam to Trivandrum and returns at a speed of 40 km per hour. Find the average speed.
If the radius of a sphere is 3cm, then its volume is ...................cm3.
If thirty observation have an average of 20 and 20 observations have a mean of 30 then what is the average of all observations?
A father is twice old as his son. Twenty years ago he was 6 times of his son’s age at that time. Find the current age of the father?