This is a very good question..
can someone solve it?

What is the time period of small horizontal oscillation of the given block?
remember skygirl posting a question like this with all those k1 .... k8 or 9 ...
can u plz post the skygirl link or else the solution of the above prob. now?
It is basically just an HC verma type question (In which there is a block in middle and connected by three springs) when we take the series and parallel combination of springs and replace them with equivalent ones to obtain 3 springs only.