Given that the cost price of 10 oranges is equal to the cost price of 1 kg of apples and the cost price of12 apples is equal to the cost price of 1 kg of oranges. If the selling price of 15 oranges is...
Have you felt that squaring a number is the tedious process? Well, not at least for numbers ending with 5. Here I present a simple trick which helps you calculate the squares of 2 digit and 3 digit numbers...