Logic

Operator Search

Operator Search: Level 2 Challenges

         

12345678=9 \large 1 \, \square \, 2 \, \square \, 3 \, \square \, 4 \, \square \, 5 \, \square \, 6 \, \square \, 7 \, \square \, 8 = 9

There are 27=128 2^7 =128 ways in which we can fill the squares with +, +, -.

How many ways would make the equation true?

Note: You are not allowed to use parenthesis.

3    3    3    3 \large 3 \; \square \; 3 \; \square \; 3 \; \square \; 3

Fill in the boxes above with any of the four mathematical operators ( +,,×,÷+, -, \times , \div ). Which of the following cannot be a resultant number?

Note: Order of operations (BODMAS) applied.

1    2    3    4    5    6    7    8    9=33\large 1 \; \square \; 2 \; \square \; 3\; \square \; 4\; \square \; 5 \; \square \; 6 \; \square \; 7 \; \square \; 8 \; \square \; 9 = 33

Seven of the eight "\square"s above are filled with "++", and the other one with "-".

Before which integer should the "-" sign be placed to make the equation true?

18  12  4  5=59\large 18 \ \square \ 12 \ \square \ 4 \ \square \ 5 = 59

Replace each \square with one of +,,×,÷+,-,\times,\div to make the equation true.

Submit your answer as a 3 digit number, where:

  • 11 represents ++
  • 22 represents -
  • 33 represents ×\times
  • 44 represents ÷\div

Example : If your answer is +,,×+, -, \times then enter the answer as 123123.

1    4    9  =  16\Huge 1\ \ \ \ 4 \ \ \ \ 9 \ \ = \ \ 16

Is it possible to make this equation true by inserting the appropriate operations? Any operations and functions can be used.

×

Problem Loading...

Note Loading...

Set Loading...