Zios and Zepts
Deep in a rainforest, two new creatures have been discovered. They are called Zios ,which have 3 legs and Zepts, which have 7 legs.
The great explorer Nico, who first discovered them back in 2012, saw a crowd of the creatures gathering on the forest floor. He managed to sneak up on them and see that there were both Zios and Zepts in crowd. However, as soon as they all saw him, they all rolled over onto their backs and put their legs in the air.
He could count 52 legs but had no idea how many creatures he was looking at.
How many Zios and how many Zepts do you think there were in the crowd?
Do you think there is more than one possible answer?