Book Maths Puzzle

find the next number in the series
2,9,10,11,9,?

Read Solution (Total 2)

Book Other Question

A vertical pole and a vertical tower are on the same level ground. From the top of the pole the angle of elevation of the top of the tower is 60 and the angle of depression of the foot of the foot of the tower is 30. Find height of the tower if the height of the pole is 20m prove that the equation 6(x^2)-5x+1=0
has no integral solution