User talk:Biplabbera1994

January 2018
Please refrain from making unconstructive edits to Wikipedia, as you did at Derivative (finance). Your edits appear to constitute vandalism and have been reverted. If you would like to experiment, please use the sandbox. Repeated vandalism can result in the loss of editing privileges. Thank you. Mortee (talk) 13:06, 13 January 2018 (UTC)