Logic Puzzles

Brothers And Sisters


A family I know has several children. Each boy in this family has as many suters as brothers but each of the girls has twice as many brothers as sisters. How many brothers and sisters are there?


Since the boys have as many brothers as sisters, there must be 1 boy more than the number of girls. If we try 2 and 1, 3 and 2, and 4 and 3, we will find that 4 boys and 3 girls is the solution to fulfil the requirement that each girl has twice as many brothers as sisters.

See also:
At Right Angles (Difficulty: 4)
Loose Cash (Difficulty: 3)
The Staircase Race (Difficulty: 4)
Horses And Bullocks (Difficulty: 2)
The Two Trains (Difficulty: 4)

Logic Puzzle: Brothers And Sisters

Logic puzzles are loved by both children and adults. They develop logic, the ability to analyze and summarize data, look for possible solutions, form a strategy, and check data for reliability. Trying to solve a logical task, a person uses different variants of logical schemes, thereby increasing the knowledge available to him.

A variety of logic puzzles are mathematical puzzles that require not just the inclusion of logical thinking, but also knowledge of the laws of mathematics.

You can find logical and mathematical puzzles with answers on our website. Solving riddles and puzzles is a great pastime for those who like to think.