P, Q, R, S are to give lecture to an audience. The organizer can arran

1.	P, Q, R, S are to give lecture to an audience. The organizer can arrange the order of their presentation in : (a) 256 ways (b) 24 ways (c) 4 ways (d) 12 ways
Answer» Correct option (b) 24 ways Explanation: Since there are 4 people P, Q, R, S who are to give lecture to an audience. ∴ The number of ways in which their presentation can be arranged = 4 ! = 4 × 3 × 2 × 1 = 24.

P, Q, R, S are to give lecture to an audience. The organizer can arrange the order of their presentation in : (a) 256 ways (b) 24 ways (c) 4 ways (d) 12 ways

Answer»

Correct option (b) 24 ways

Explanation:

Since there are 4 people P, Q, R, S who are to give lecture to an audience.

∴ The number of ways in which their presentation can be arranged

= 4 ! = 4 × 3 × 2 × 1 = 24.

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P, Q, R, S are to give lecture to an audience. The organizer can arrange the order of their presentation in : (a) 256 ways (b) 24 ways (c) 4 ways (d) 12 ways

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