book Maths Puzzle Numerical Ability

If there are 60 rows of seats in a movie theatre and the first row has 30 seats in it, and each consecutive row has one additional seat (ie. the second row has 31), then how many s

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In a distant planet there are four forms of beings: zadohs, pugwigs, cahoots, and zingzags. All zadohs are pugwigs. Some pugwigs are cahoots. All cahoots are zingzags. Which of the i dont get how to do experimental and theoretical probablities.please explain these to me with a few examples.