There are $18$ stations between Hyderabad and Vijayawada. How many second class tickets have to be printed so that a passenger can travel from any station to any other station.

200

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190

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95

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100

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380

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Solution

The correct option is C $380$
$18$ stations between Hydrabad and Vjayawada
$\Rightarrow$ A total $20$ Stations issuing tickets
$\Rightarrow$ selecting $2$ stations
Possible number of tickets
$=^{20} P_{2} = 20 \times 19 = 380$
Therefore tickets can be issued in $380$ ways.

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There are 18 stations between Hyderabad and Vijayawada. How many second class tickets have to be printed so that a passenger can travel from any station to any other station.

The correct option is C 38018 stations between Hydrabad and Vjayawada ⇒ A total 20 Stations issuing tickets ⇒ selecting 2 stations Possible number of tickets =20P2=20×19=380 Therefore tickets can be issued in 380 ways.

There are $18$ stations between Hyderabad and Vijayawada. How many second class tickets have to be printed so that a passenger can travel from any station to any other station.

The correct option is C $380$
$18$ stations between Hydrabad and Vjayawada
$\Rightarrow$ A total $20$ Stations issuing tickets
$\Rightarrow$ selecting $2$ stations
Possible number of tickets
$=^{20} P_{2} = 20 \times 19 = 380$
Therefore tickets can be issued in $380$ ways.