Sandra's Age Puzzle

Sandra has three children with different ages. This year, she noticed that the sum of her three children's ages is equal to her age. How old is Sandra?

• 30 years old

• 40 years old

• 50 years old

• 60 years old

If Sandra is 40 years old and has one child who is 13 years old and another who is 11 years old, what is the age of Sandra's oldest child?

• 13 years old

• 11 years old

• 40 years old

• 52 years old

If Sandra is 52 years old and has one child who is 15 years old and another who is 19 years old, what is the age of Sandra's oldest child?

• 15 years old

• 19 years old

• 52 years old

• 40 years old

If Sandra is 40 years old and one son is 13 years old while the other is 11 years old, how old is Sandra's oldest son?

• 16 years old

• 13 years old

• 11 years old

• 15 years old

If Sandra is 52 years old and one son is 15 years old while the other is 19 years old, how old is Sandra's oldest son?

• 18 years old

• 15 years old

• 19 years old

• 17 years old

What is the main goal of studying logic?

• To determine when certain things follow from others

• To learn how to draw

• To understand animal behavior

• To memorize historical dates

What does logic study?

• Principles and methods of inference

• Types of music

• Different languages

• Cooking recipes

What is the area that studies the structure of statements and their formation rules?

• Philosophy

• Mathematics

• Science

• History

What does logic help us to do correctly?

• Think

• Dance

• Sing

• Paint

Where should the focus be according to the text?

• On the structure, aesthetics, and form

• On isolated actions

• On colors and shapes

• On music and art