In this type of question, substitutions for various mathematical symbols are given, followed by a question involving the calculation of an expression or choosing a correct/incorrect equation. You must insert the correct symbols in the given equation and then solve the questions as needed.
If '?' means '÷', '#' means '×', '^' means '+', and '$' means '−', then find the value of:
12 # 7 ^ 3 $ 10 = ?
Show answer & explanation
Correct answer: C
Explanation
After replacing the symbols with actual operations,
= 12×7+3-10
= 12×7+3-10
= 84-7
= 77