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Monthly Archives: May 2023
IB SL Geometric Probability (Serena and her dart game)
Serena is having a bad day and her dart game is off. The probability of her beating her sister in any round is . As soon as she wins the game she stops playing.
IB SL Probability (Biased Dice)
Ibu Putu rolls two fair dice (a). Given that the first dice scored over a 3, what is the probability that the product of the numbers from the two dice is more than 8 ? (b) What would the probability … Continue reading
Gauss Contest 2022, Problem 23 (Encoded Message)
To encode a message, James first replaces each letter within the message with its corresponding number, where A=1, B=2,…, Y=25 and Z=26. Next, James multiplies each number by 3 and then subtracts 5, and continues this process a total of … Continue reading
Guass Contest 2022 Problem 12: Calendar Problem (The 3rd Wednesday)
A Public holiday is always celebrated on the third Wednesday of a certain month. In that month, the holiday cannot occur on which of the following days ?
Sumant's 1 page of Math 