Question

In a self there are $2$ different physics books and $3$ different chemistry books. The number of ways in which a student can select a physics book or chemistry book is:

• A. $5$
• B. $6$
• C. $7$
• D. $4$

Answer 1

The correct option is A $5$

A student can select physics book or a chemistry book in $2+3=5$ ways.
The five ways are $P_1,P_2,C_1,C_2,C_3$