14/15
The one I apparently got incorrect was this one
" If you were to discover that your great-great-grandmother married at the age of 23 in 1850, would this be...."I answered a little older than average.
Their answer was a little younger than average. According to them the average was just over 24
I'd like to know where they got their info from for these brides in 1850, considering a great, great many marriages does not give an age of the bride (and the groom) , and of course their births would have been before civil reg, and of course censuses can not be relied on neither deaths for age
Take it with a pinch of salt

Kind Regards