Mathematical Operations
The following equation is incorrect. Which of the following two signs should be interchanged to correct the equation? 18 + 6 × 4 - 12 ÷ 3 = 17
If 6*3 = 54 and 8*2 = 48, what is 5*4?
If 2 @ 3 = 13, 3 @ 4 = 25, then what is 4 @ 5?
If + means ÷, - means ×, × means -, ÷ means +, find: 8 ÷ 2 × 3 + 18 - 6 = ?
If + means ×, × means ÷, - means +, ÷ means -, then 36 ÷ 6 - 2 × 3 = ?