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Sagot :
Answer:
a)
A to B 5 routes and B to C 4 routes
Total options:
- 5*4 = 20
b)
A to C, 20 ways as above calculation.
C to A, 20 ways as well.
Total options:
- 20 * 20 = 400
c)
A to C, 20 ways
Return to A with different ways:
- (5 - 1)(4 - 1) = 4*3 = 12
Total options:
- 20 * 12 = 240
>> Answer
_________
[tex]\:[/tex]
- Number (A.)
A = 5routes
b = 4routes
C = 5 × 4 = 20routes
.
- Number (B.)
C = 20routes
Soo :
20 × 20 = 20^2 = 400
.
- Number (C.)
(5 - 1) × (4 - 1) × 20 = 4 × 3 × 20
= 12 × 20 = 240
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