The number of ways in which three district number in AP can be selecte

1.	The number of ways in which three district number in AP can be selected from 1,2,3--------,24 is (a) 132 (b) 572 (c) 264 (d) 150
Answer» Correct option (a) 132 Explanation: ¹²C₂ + ¹²C₂ = 12.11/2.1 .2 = 132 (First and last number should either be both even or both odd and the middle number is average of the two)

The number of ways in which three district number in AP can be selected from 1,2,3--------,24 is (a) 132 (b) 572 (c) 264 (d) 150

Answer»

Correct option (a) 132

Explanation:

¹²C₂ + ¹²C₂ = 12.11/2.1 .2 = 132

(First and last number should either be both even or both odd and the middle number is average of the two)