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Monthly Archives: November 2022
What is the sum of LCM and GCD ?
Find the sum of the LCM and GCD of positive numbers and that satisfy the equation
AIME problem on LCM
For how many values of is the least common multiple of the positive integers and ?
Combining Two Discrete Independent Random Variables
The discrete random variables A and B are independent and have the following distributions.
2002 AMC 12A Problem 20
Suppose that a and b are digits, not both nine and not both zero, and the repeating decimal 0.ababab.. is expressed as a fraction in lowest terms. How many different denominators are possible ?
2021 AMC 10A Problem 8
When a student multiplied the number 66 by the repeating decimal 1.abab… 1=ab, where a and b are digits, he did not notice the notation and just multiplied 66 times 1.ab. Later he found that his answer is 0.5 less … Continue reading
Sumant's 1 page of Math 