Select the correct combination of mathematical signs that can sequentially replace the * signs from left to right to balance the following equation.
31*2*60*30*15*49
A×, +, ÷, -, =
B-, ÷, +, ×, =
C×, ÷, +, -, =
D×, -, +, ÷, =
A×, +, ÷, -, =
B-, ÷, +, ×, =
C×, ÷, +, -, =
D×, -, +, ÷, =
Related Questions:
In an imaginary mathematical system, symbol '@' stands for addition, symbol '$' stands for division, symbol '&' stands for subtraction, and symbol '#' stands for multiplication. What is the value of the following expression?
165 $ 11 # 15 & 4 @ 6