Question
X, Y, Z, A, B and C are 2-digit numbers. If X is 15, Y is the third multiple of X, Z is the fourth multiple of 10, A is the volume of a cube with length of 3 units, and C is the 6th multiple of 12, B is the first 2-digit of the 4-digit number. What is B?


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X, Y, Z, A, B and C are 2-digit numbers. If X is 15, Y is the third multiple of X, Z is the fourth multiple of 10, A is the volume of a cube with length of 3 units, and C is the 6th multiple of 12, B is the first 2-digit of the 4-digit number. What is B?