Comments by tiger

A sum of rs. 10 is lent to be returned in 11 monthly installments of rs.1 each , interest being simple. the rate of interest is?

A function $f(x) $ satisfies $f(1)=3600$ and $f(1)+f(2)+ \dots + f(n) = n^2 f(n)$, for all positive integers $n>1.$ What is the value of $f(9)?$$80$$240$$200$$100$$120$

The average age of Sachin and Ganguli is 35 yrs. If Kaif replaces Sachin, the average age is 32 yrs, if Kaif replaces Ganguly average age is 38 yr. If the average age of ...

There are $150$ students in a class. The number of students who play Cricket, Hockey, and Basketball are $125, 130, 135$ respectively. If $5$ students do not play any of ...