self Maths Puzzle

Each child in a family has at least 4 brothers and 2 sisters. What is the smallest number of children the family might have?

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self Other Question

A number of children are standing in a circle. They are evenly spaced and the 8th child is directly opposite the 17th child. How many children are there altogether? There is a pole in a lake. One-half of the pole is in the ground, another one-third of it is covered by water, and 11 ft is out of the water. What is the total length of the pole in ft?