Logic

Arithmetic Puzzles

Arithmetic Puzzles - Operator Search

         

What series of signs will make the following equation true: 2222=6 2 \, \square \, 2 \, \square \, 2 \, \square \, 2 = -6

Which of the following series of signs will make the following equation true: 2222=4? 2 \, \square \, 2 \, \square \, 2 \, \square \, 2 = 4?

What series of signs will NOT make the following equation true: 8888=0? 8 \, \square \, 8 \, \square \, 8 \, \square \, 8 = 0?

How many different 3-tuples (,,)(\square,\triangle,\star) of operators make the following equation true: 6(32)=11?6 \, \square \, (3 \, \triangle \, 2)=1 \, \star \, 1?

Details and Assumptions

  • ,,\square,\triangle,\star can be one of the four arithmetic operators: +,,×,÷.+,-,\times,\div.
  • One kind of operator can be used more than once.

What series of signs will NOT make the following equation true: 4444=16? 4 \, \square \, 4 \, \square \, 4 \, \square \, 4 = 16?

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