Question: the expression x # y denotes the product of the consecutive multiples of 3 between x and y , inclusive . what is the sum of the exponents in the prime factorization of 21 # 33 ?
A) 12
B) 13
C) 14
D) 15
E) 16
Correct answer: c
Grade: 8 | Topic: Expressions and Equations | Difficulty: Hard | Standard: 8.EE.A.1