Math Mastery Online

The balls are either red or blue such that the number of red balls : number of blue balls = 3 : 5 A sample of 2 balls is taken at random from the bag. Given that the probability of the 2 balls being the same color is 10/19.
Find the total balls.

How to solve the probability with a ratio without a replacement problem?

We have to find out the minimum value of f(x)=4e^x+9e^-x .

How to arrange ascending or descending order of fractions using different methods. I tried to show 5 rules including conventional method also.

Price hike of soybean oil & reduction of its uses. Recently oil price has increased unusually which general people can not afford.

Different ways to resolve Multiplication. We have to save time and have to solve the Multiplications in time anyway.