Flipkart, Snapdeal, Paytm, Ola and Zomato – some of the top start-ups in the country are mostly all boys' clubs with little gender balance at the top. Why are women missing in the start-up world? What are the roadblocks that deter women when they venture out on their own? Why is the world's fastest growing start-up ecosystem ranked at the bottom when it comes to woman entrepreneurs? We take a look at the various challenges women face while starting a start-up.