Math, asked by shivaayu3154, 11 months ago

In a regular decagon find the probability that diagnols are parallel

Answers

Answered by amitnrw
0

9/119 is the probability that diagonals are parallel In a regular decagon

Step-by-step explanation:

Number of diagonals in decagon = 10(10- 3)/2

= 10 * 7 /2

= 35

35 Diagonals

Number of Ways of Selecting two Diagonals = ³⁵C₂  = 35  * 17

Numbers of Ways of Selecting Parallel Diagonals Pair  = 5 * ³C₂  + 5 * ⁴C₂

= 5 * 3  + 5 * 6

= 45

probability that diagonals are parallel  if two diagonals are randomly selected

45/(35 * 17)

= 9/119

9/119 is the probability that diagonals are parallel In a regular decagon

Learn more:

Identify the probability to the nearest hundredth that a point chosen ...

https://brainly.in/question/9369119

Two different dice are tossed together. Find the probability that (i) the ...

https://brainly.in/question/9248931

Similar questions