Is this a bug in showing the % of score on quiz 11

out of 10 questions, only two questions were wrong.
But i was given 70%

Is this a bug??

please take a look here.

I know this rule.
Out of 10 questions, i got 8 correct and it is showing 70%


could someone tell me is this a bug ?

NO Susheel, Its not a bug you have checked only one answer but that question has multiple correct answers , you have to select all the correct options to get the score as 10.

okay… thank you!