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A boy has nine trousers and 12 shirts. In how many different ways can he select a trouser and a shirt?

 A boy has nine trousers and 12 shirts. In how many different ways can he select a trouser and a shirt?

A. 21
B. 12
C. 9
D. 108
E. 101



Answer: Option D
Explanation:
The boy can select one trouser in nine ways.
The boy can select one shirt in 12 ways.
The number of ways in which he can select one trouser and one shirt is 9 * 12 = 108 ways.
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The telephone bill of a certain establishment is party fixed and partly varies as the number of calls consumed. When in a certain month 540 calls made the bill is Rs.1800. In another month 620 calls are consumed then the bill becomes Rs.2040. In another month 500 units are consumed due to more holidays. The bill for that month would be :

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