If you had committed the mistake while filling in the blocks it wouldn't be an issue, but because you have done a mistake while colouring the bubbles it is a major mistake. The computer will only process the bubbles you have coloured not the numerical figures you have written in blocks.

Please contact the helpdesk as soon as possible- 8076535482, 7703859909

or mail them at- ntaneet-ug@nic.in, queries.net.nta@gmail.com