Leela went to a small garment store with her son. She wanted to buy an outfit for him. In the garment store, she
found two types of shirts: Formal and Denim. There were 3 choices for formals and 4 choices for denims. There
were two types of pants: Jeans and Formal, with 2 choices for each of them.
Question 19 If any shirt can be worn with any pair of pants, the number of ways Leela can select an outfit for
her son are
a) 20
b) 24
c) 26
d) 28
Question20) Leela decides to select either a formal shirt with a pair of formal pants (not with jeans) or a denim
shirt with a pair of jeans (not with formal pants). The total number of ways she can select the outfit now are :
a) 12
b) 14
c) 16
d) 20

Dear student,
 

19 Answer:

it's answer is 28 option (d)

Step-by-step explanation:

there are 3 formal shirt and 4 denim shirt

and

there are 2 formal pants and 2 denim pants

acc to this

for formal 3 shirts and 2 pants =6 outfits

for denim 4 shirts and 2 pants =8 outfits

and formal shirt with denim pants 3...and 2= 6 outfits

denim shirt with formal pants 4.....2 = 8 outfits

then total outfits are 6 + 8 + 6 + 8 = 28

20 Answer:

 

From given, we have,

Two types of pants - Jeans and Formal, with 2 choices for each of them - Formal and Denim.

⇒ 3 choices for formals and 4 choices  for denims.

∴ The total available choices for shirt  = 3 + 4 =  7

Jeans and Formal pants with 2 choices for each of them

⇒ The total available choices of pants  = 2  +  2  = 4

a formal shirt with a pair of formal pants  

= 3 choices for shirt  ×  2 choices for formal paint = 3 × 2  = 6

a denim shirt  with a pair of jeans

= 4 Choices for shirt × 2 Choices for Jeans = 4 × 2 = 8

∴ The total number of ways she can select the outfit now are  6 + 8  = 14