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# Olympia query: Discover 5 symmetries which can be the identical in each ahead and reverse? 99% of the solutions are flawed

On the contest within the first quarter of the nineteenth 12 months, Highway to Olympia had an issue with troublesome content material as follows: A symmetric 12 months is a 12 months by which each ahead and reverse are the identical, for instance 2002 is a symmetrical 12 months. What number of years of symmetry are there from 10 AD to 2018?

This query made it troublesome for contestant Tran The Trung when this male scholar needed to continually change his reply inside 20 seconds to reply the query with numbers like 21, 31 or 30. However in the long run, there was nonetheless no reply. which is appropriate. Even when the contestants got the chance to play collectively, nobody might discover the true reply to this query.

MC Diep Chi then introduced that the reply to the above query have to be 110 years. The reason may be understood as follows: Within the interval from 10 to 2018, there are 9 years with 2 an identical numbers, 90 years with 3 numbers that may be written symmetric, 11 years with 4 numbers that may be written symmetric. If you wish to shortly calculate this query, it’s essential to use the counting rule. Nevertheless, in a short while, the stress made it very troublesome for candidates to provide appropriate solutions.

The street to the highest of Olympia is an mental playground that’s liked by many college students. The questions within the contest are extraordinarily numerous, making use of all of the information of 12 years of highschool.

On the competitors week of the twenty first 12 months, an Olympia query additionally had the next “shock” content material: Chicken A was flying when he met a flock of birds B in the wrong way, so he stated: Whats up, 100 associates. The chief chook replied: “Hello, we’re not 100, however all of us, plus all of us, plus half of us and 1 / 4 of us and also you, make 100. What number of birds does B have?

The query has lots of overlapping knowledge and is extraordinarily lengthy, complicated the viewers. Nevertheless, that is really only a stage 2 downside, slightly observant is ready to make an equation from the given knowledge. The reply to this query is 36 kids.