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Which of the following is correct when calculated from left to right, ignoring BODMAS, if the rulesays, 5+2=3, 5−2=7, 10÷2=20 and 10×2=5 ? 
Question

Which of the following is correct when calculated from left to right, ignoring BODMAS, if the rulesays, 5+2=3, 5−2=7, 10÷2=20 and 10×2=5 ? 

A.

9×3−1÷2=18 

B.

5+1÷4−3=19

C.

6×2−1+2=12

D.

7÷2+4−2=14

Correct option is B

The correct answer is (B) 5 + 1 / 4 - 3 = 19.

1. Decoding the Rules

Based on the examples provided, the operators have been swapped as follows:

  • + means - (Example: 5 + 2 = 3)

  • - means + (Example: 5 - 2 = 7)

  • / (division) means x (multiplication) (Example: 10 / 2 = 20)

  • x (multiplication) means / (division) (Example: 10 x 2 = 5)

Crucial Rule: Calculate strictly from left to right, ignoring BODMAS.

2. Testing the Options

Option 1: 9 x 3 - 1 / 2 = 18

  • Transformed: 9 / 3 + 1 x 2

  • Left-to-Right: 9 / 3 = 3; 3 + 1 = 4; 4 x 2 = 8 (Incorrect)

Option 2: 5 + 1 / 4 - 3 = 19

  • Transformed: 5 - 1 x 4 + 3

  • Left-to-Right: 5 - 1 = 4; 4 x 4 = 16; 16 + 3 = 19 (Correct)

Option 3: 6 x 2 - 1 + 2 = 12

  • Transformed: 6 / 2 + 1 - 2

  • Left-to-Right: 6 / 2 = 3; 3 + 1 = 4; 4 - 2 = 2 (Incorrect)

Option 4: 7 / 2 + 4 - 2 = 14

  • Transformed: 7 x 2 - 4 + 2

  • Left-to-Right: 7 x 2 = 14; 14 - 4 = 10; 10 + 2 = 12 (Incorrect)

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