Ka taƙaita labarin:  An saita shi a matsayin matsalar lissafi, da nufin gwada ƙwarewar tunani na yara 'yan shekara 14 a Singapore. Amma tambayar ta zama ruwan dare gama gari bayan mutane a duk duniya sun kasance cikin rudani. Matsalar, wacce ke gwada tunani mai ma'ana, an raba ta sau dubbai a kan layi yayin da mutane suka yi ƙoƙarin gabatar da mafi kyawun bayanin su game da abin da da farko ya zama kamar tambaya ce da ba za a iya yi ba. Tambayar lissafi da aka saita don'yan shekaru 14 ya bar mutane a duk faɗin duniya suna rikicewa yayin da suke ƙoƙarin warware matsalar. An saita gwajin ne ga 'yan shekaru 14 a cikin Singapore da Asian Schools Math Olympiad. Wasannin Olympics sau da yawa suna nuna tambayoyin tunani mai ma'ana kuma an saita su don gwada waɗanda suka yi nasara. Katie Chrystler ta wallafa a shafinta na Twitter cewa: <unk>Idan Cheryl ta sa ya yi wuya a gano ranar haihuwarta, ba za ta sami kyaututtuka da yawa ba.<unk> David Leong ya yi ba'a: "Cheryl a bayyane yake ba ta son Albert da Bernard a bikinta. Ya kamata in fahimci abin da Cheryl ta yanke shawarar yi lokacin da ta yanke shawarar yin wannan wasan. <unk> Wani mutum a Landan ya ce: "Ban san kome ba! Ina fata da na kasance mai basira don amsa irin wannan. Amma kwakwalwata ba ta aiki haka. Gwajin ya tambaya: Albert da Bernard sun zama abokan Cheryl, kuma suna son su san ranar haihuwarta. Cheryl ta ba su jerin mutane 10 da za su iya saduwa da su. Mayu 15, Mayu 16, Mayu 19. 17 ga Yuni, 18 ga Yuni. 14 ga Yuli, 16 ga Yuli 14 ga Agusta, 15 ga Agusta, 17 ga Agusta. Cheryl sa'an nan ya gaya wa Albert da Bernard daban-daban da watan da ranar haihuwarta. Albert: Ban san ranar haihuwar Cheryl ba, amma na san cewa Bernard ma bai sani ba. Bernard: Da farko ban san ranar haihuwar Cheryl ba, amma na sani yanzu. Albert: Na kuma san ranar haihuwar Cheryl. To yaushe ne ranar haihuwar Cheryl? Masu shirya SASMO sun ce an shirya tambayar ne don tace mafi hankali daga cikin mahalarta. Da farko tambayar tana da wuya a amsa ba tare da ƙarin bayani ba, amma mun san cewa Cheryl ta riga ta gaya wa Albert watan da aka haife ta, kuma ta gaya wa Bernard ranar. Kowane mutum bai san abin da ɗayan yake da shi ba...
Matsalar lissafi ga'yan shekara 14 ta rikitar da mutane a fadin duniya. Tambayar tana amfani da tunani mai ma'ana kuma yana da niyyar fitar da mafi hankali. An saita shi a cikin Singapore da Asian Schools Maths Olympiads (SASMO) Teaser ya bayyana a matsayin lamba 24 daga cikin tambayoyi 25 don gwada ɗalibai.