Question

If there are five trains from P to Q and 2 trains from Q to R, in how many ways can one travel from P to R by train (assume there are no direct trains from P to R)?
Choices:-
5
8
10
15​

Answer 1

Answer:

8

Step-by-step explanation:

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Answer 2

Given : there are five trains from P to Q and 2 trains from Q to R,

To Find :  ways one can  travel from P to R by train  

5

8

10

15​

Solution:

Person can got from P to Q  in 5 ways

Person can go  from Q to R in 2 Ways

Total Ways  =  5 x 2  =  10

One can travel in 10 ways from P to  R

Trains from P to Q = { 1 , 2 , 3, 4 , 5}

Trains from Q to R =  { A  , B }

Total Ways from P to R

= { (1A) , (2A) , (3A) , (4A) , (5A) , (1B) , (2B) , (3B) , (4B) , (5B) }

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