Three dice are rolled. If the probability of getting different numbers on the three dice is , where p and q areco-prime, then is equal to :
1
2
4
3
Correct Answer is option 3
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50 mL of 0.2 M ammonia solution is treated with 25 mL of 0.2 M HCl. If pKb of ammonia solution is 4.75, the pH of the mixture will be : Option: 1 3.75 Option: 2 4.75
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