[tirade]

Question 1: At a point in a titration between 1.00 M sodium hydroxide and 2.00 M sulfuric acid
3.00 mL of the sulfuric acid had been added from the burette to 10.0 mL of sodium
hydroxide in the conical flask.
If the pH of the mixture in the conical flask at this point was measured with a probe,
what should the reading be?

The answer given was 0.81. How?

[Borek]

Many ways to make this mistake, no idea "how"