Q:

Select the correct combination of mathematical signs to replace the * signs and to balance the given equation.
 50 * 2 * 3 * 30 * 10 * 40 * 20

• 1
  =, ×, ×, +, –, ÷
• 2
  –, ÷, ×, ×, =, ×
• 3
  =, ×, +, ×, –, ÷
• 4
  ×, =, ×, ×, −, ×