A class contains 40 students. 21 students own a Math book, 27 students

1.	A class contains 40 students. 21 students own a Math book, 27 students own a Science book, and each student owned at least one of the two text books. Determine the number of students who owned Math and Science textbooks. *
Answer» number of student own only math 21 and science 27 ( 6 extra than math) and REST have each one OFDTHE book so we can SAY than only 21 of the 40 student have both

A class contains 40 students. 21 students own a Math book, 27 students own a Science book, and each student owned at least one of the two text books. Determine the number of students who owned Math and Science textbooks. *

Answer»

number of student own only math 21

and science 27 ( 6 extra than math)

and REST have each one OFDTHE book

so we can SAY than only 21 of the 40 student have both

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A class contains 40 students. 21 students own a Math book, 27 students own a Science book, and each student owned at least one of the two text books. Determine the number of students who owned Math and Science textbooks. *

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