self Maths Puzzle

In a class, 67% play cricket, and 82% play chess.
Question 1: What is the maximum number of students who can play cricket as well as chess.
Question 2: What is the minimum number of students who can play cricket as well as chess, given that each students play atleast one game.

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self Other Question

After the withdrawal of volunteers, some new volunteers joined the NGO. Each one of them was allotted only one project in a manner such that, the number of volunteers working in one project alone for each of the three projects became identical. At that point, it was also found that the number of volunteers involved in FR and ER projects was the same as the number of volunteers involved in TR and ER projects. Which of the projects now has the highest number of volunteers?
(1) ER
(2) FR
(3) TR
(4) Cannot be determine A two digit number added to 18, we get another two digit number with reversed digits. Then how many pairs of two digit numbers are possible?