Barry took his sister, Maureen, to his end-of-year work picnic. While there they had an animated discussion about what to buy their mother for her forthcoming birthday. The discussion ended when they were joined by Barry’s work colleague, Brian. Barry introduced his sister to Brian who commented politely, “How lovely to meet you. And you must be younger than Barry by several years, surely?”
“Oh, no”, replied Maureen. “Barry and I were born on the same day, of the same month of the same year”.
“Twins then.” stated Brian.
Brian looked most perplexed when Maureen told him they were not twins.
Can you help him out?
Barry and Maureen might be just two siblings from a set of triplets, quadruplets, quintuplets…take your pick.