Joe's age,Joe's sister's age and Joe’s father's age sums up to a century . When son is as old as his father ,Joe's sister will be twice as old as now. When Joe is as old as his father then his father is twice as old as when his sister was as old as her father . Age of her father is?
"Numbers have life ; they are not just symbols on paper"
Sushmitha
mathematics never dies because it always stays in the minds and souls of people who love mathematics.
Those people will not let maths die instead they will die.................