New solution of the OurGlass puzzle #shorts

In a crossword puzzle 10 words are to be guessed of which 5 words have each an alternative solution also.No.of possible solutions is

3 students {A, B, C} tackle a puzzle together and offers a solution upon which majority of the 3agrees. Probability of A solving the puzzle correctly is p. Probability of B solving the puzzle correctlyis also p. Cisa dumb student who randomly supports the solution of either A or B. There is one morestudent D, whose probability of solving the puzzle correctly is once again, p. Out of the 3 memberteam {A, B, C} and one member team {D}, which one is more likely to solve the puzzle correctly.

pH of a strong acid solution is 2 . What volume of water must be added to its 1L of solution so that pH of new solution becomes 3 ?

A sugar solution of 3 litres contains 40% sugar. One litre of water is added to this solution. What is the percentage of sugar in the new solution ?

Pick out the pronoun in the following sentence and mention the reflexive pronoun : The author himself was puzzled.