I. 2x²-11x+14=0

II. 2y²-7y+6=0

I. 3x²-13x+14=0

II. 3y²-17y+22=0

I. x²=81

II. y²+13y+36=0

A bag contains 6 red, 5 yellow and 3 pink balls. Two balls are drawn at random. What is the probability that none of the balls drawn are red in colour

A vessel contains a mixture of milk and water in the respective ratio 3:1. 32 litre of mixture was taken out and replaced with the same quantity of milk so that the resultant ratio between the quantities of milk and water in the mixture was 4 : 1 respectively. If 10 litre of mixture is again taken out from the vessel. What is the resultant quantity of water in the mixture ? (in litre)

Area of a rectangle is 96 m². When the length of the same rectangle increased by 6 m and the breadth decreased by 3 m, then the area of the rectangle decreases by 30 m². What is the perimeter of a square whose sides are equal to the length of rectangle