If '+' means '±', '-' means '+', '×' means '-' and '÷' means '×', then 49 + 7 - 11 × 2 ÷ 4 = ?
Show answer & explanation
Correct answer: A
Explanation
+ means ÷
− means +
× means −
÷ means ×
49 + 7 − 11 × 2 ÷ 4
Switching signs:
49÷7+11−2×4=?
7+11−2×4=?
7+11−8=?
? = 10