Question
 If $ means +, # means - , @ means x and * means ÷,
then what is the value of 22 $ 3 @ 10 # 21 * 7 =?Solution
22 $ 3 @ 10 # 21 * 7 =? 22 + 3 x 10 – 21 ÷ 7 22 + 3 x 10 – 3 22 + 30 – 3 = 49
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