The average age of 10 players is 18. When a new player is included in the squad, the average age became 19, what is the age of the player included ?
If 4*5 = 9 and 5*4 = 21, then 6*9 =
The ratio between the radius and height of a cylinder of volume 502.4 cm³ in 2:5. Its height is:
If the sum of the squares of 3 consecutive natural numbers is 110, then the sum of these 3 numbers is:
There were 5000 literate in a village. 35% can speak English and 60% can speak Hindi. 30% speak neither English nor Hindi. How many persons can speak both English and Hindi ?
If A denotes ‘–’, B denots ‘+’, C denotes ‘x’ and N denotes ‘÷’, then 15B9A15C10N5 = ?