I tested sending multiple transactions with a low time gap, and I knew that they will wait for previous transactions to be confirmed. I did not use Nonce in the transaction code as it is optional. But I would like to know, is there any way to send transactions without waiting for confirmation of previous ones?  

I thought about using `nonce = getTransactionCount() + 1`, although, I am not sure is it correct or not? and which condition I have to set in it amoung `latest`, `earliest` or `pending` for this solution.