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Coding and Decoding · Question 45 of 66

Question 45

MediumOriginal question

If P means '+', Q means '×', R means '−' and S means '÷', what is the value of 36 S 4 P 5 Q 3 R 8?

Options for question 45

Show the answer and explanation
CorrectNot quiteAnswer A

Correct answer: A

Explanation

  1. Replace the letters: 36÷4+5×3−836 \div 4 + 5 \times 3 - 8.

  2. Division and multiplication first: 36÷4=936 \div 4 = 9 and 5×3=155 \times 3 = 15.

  3. Then 9+15−8=169 + 15 - 8 = 16.

Worth noting

34 works left to right, (9+5)×3−8(9 + 5) \times 3 - 8, ignoring the order of operations. 40 mixes up P and Q.

Concept
Letters standing for arithmetic operations
Typical time
70 s
Your time
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The rule this testsSubstitution codes
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