A boy has nine trousers and 15 shirts. In how many different ways can he select a trouser and a shirt? Select the correct option: A) 88 B) 98 C) 106 D) 135 E) 111
Explanation:   The boy can select one trouser in nine ways.   The boy can select one shirt in 15 ways.   The number of ways in which he can select one trouser and one shirt is   9 * 15= 
<gadget id="calculator">  9 * 15</gadget>
<output>135</output>
135 ways   135)
<result>D</result>
A boy has nine trousers and 15 shirts. In how many different ways can he select a trouser and a shirt?