The sum of a two digit number is 8. The number obtained by interchanging two digits exceeds the given number by 18. Find the number:
At what rate of simple interest per annum an amount will be doubled in 10 years?
What is the chance of getting a 2 or 4 in rolling a die?
The solutions to x 2+6x+9 = 0 is .......................
How many balls of radius 4cm can be made from a solid sphere of lead of radius 8 cm?
1/tan Θ= .........