1. If the set A = {1,2,3, 5, 8, 9}, the set B = { 1, 3, 4, 6, 7}, and the set C = {2, 3, 4, 5, 6, 7, 8, 9}, then determine... a. A(BC) b. A(BC) c. A (BC)

2. Determine the value of the binary number 111011001 if expressed as a decimal number.

3. A measuring tape is expressed in the form of a function as follows: f(n) = 2.3n-1. Based on the function of the series, determine the value of the 12th term and the value of the 16th term and the value of the 12th series and the value of the 16th series.

4. A customer deposits his money in a bank in the amount of Rp. 10 million for 2 years. If the deposit interest rate offered by the bank is 10% per year, and the interest calculation system uses a compound interest system that is paid every 3 months, calculate the value of the deposit at the end of year 2.

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