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Can you solve the maths question for Singapore schoolkids that went viral?


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9 hours ago, Chinahand said:

I had heard this and it is amazing. Now I’ll defer to those with greater expertise but I do think the probability of these three oldies all having the luxury of being born on the same specific day - ie the day which results them being the oldest people in the world is one in 50 million which is quite different affair than 3 people being born on a general day only special because granny was born on that particular day - ie one of the 3. 

The odds of people having the same birthday in 1908 must be very high. Let’s say, UK  wide 20,000 were born on that day it’s then an actuarial calculation. Worldwide it may have been a 500,000 born on that day. Of course the mortality rates and actuarial tables for different birth locations would be wildly different.

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Sorry chinahand. Had visitors, will ring you back shortly.

Looks to me like chinahands kitchen after he finished tiling it

Can you solve the maths question for Singapore schoolkids that went viral?

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A former colleague of mine celebrated his birthday on 26th October. His grandmother, mother, brother and sister were all born on 26th October, though of course in different years.

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