When the number of times centenarians are encouraged to get vaccinated and boosted within a certain time frame is based on the sum of the digits of their age (not exceeding half a dozen jabs) in order to prolong their longevity on this side of
eternity—for instance, a 102-year-old
person would be jabbed at least three times, compared to a 103-year-
old folk who would be shot no less than four times.
A nursing home has
three senior residents aged 102, 103, and 104, respectively. Based on
pre-heaven vaccination guidelines, what is the least number of shots the trio are expected to receive in due course?