A bag contains 9 balls marked with digits1, 2, ...., 9. If two balls a

1.	A bag contains 9 balls marked with digits1, 2, ...., 9. If two balls are drawn from the bag,then number of ways of getting the sum of thedigits on balls as odd number is-
Answer» ANSWER: The BALLS are marked as 1,2,3,4,5,6,7,8,9 and the sum can be odd numbers when the balls are 1+2, 1+4, 1+6, 1+8, 2+3, 2+5, 2+7, 2+9, 3+4, 3+6, 3+8, 4+5, 4+7, 4+9, 5+6, 5+8, 6+7, 6+9, 7+8 and 8+9. *The TOTAL number of OUTCOMES is= 99= 81 P(Sum is odd)= 20/81**

A bag contains 9 balls marked with digits1, 2, ...., 9. If two balls are drawn from the bag,then number of ways of getting the sum of thedigits on balls as odd number is-

Answer»

The BALLS are marked as 1,2,3,4,5,6,7,8,9 and the sum can be odd numbers when the balls are 1+2, 1+4, 1+6, 1+8, 2+3, 2+5, 2+7, 2+9, 3+4, 3+6, 3+8, 4+5, 4+7, 4+9, 5+6, 5+8, 6+7, 6+9, 7+8 and 8+9.

The TOTAL number of OUTCOMES is= 9*9= 81

P(Sum is odd)= 20/81

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A bag contains 9 balls marked with digits1, 2, ...., 9. If two balls are drawn from the bag,then number of ways of getting the sum of thedigits on balls as odd number is-​

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A bag contains 9 balls marked with digits1, 2, ...., 9. If two balls are drawn from the bag,then number of ways of getting the sum of thedigits on balls as odd number is-