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1). 162 N 2 O 2 B 100 C 20 N 2 X 2302). 36 B 4 O 2 N 5 C 15 B 50 X 81 3). 182 O 2 N 4 B 15 C 30 X 3514). 642 O 2 N 3 C 100 B 10 X 875 |
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Answer»
Applying the BODMAS rule to the given equations, 1) By substituting the above signs we get, Equation: 162 N 2 O 2 B 100 C 20 N 2 X 230 162 × 2 ÷ 2 + 100 – 20 × 2 = 230 = 162 × 1 + 100 – 40 = 162 + 60 = 222 = 222 ≠ 230 It should be 222 but it is given as 230, thus it is the incorrect equation. 2) By substituting the above signs we get, Equation: 36 B 4 O 2 N 5 C 15 B 50 X 81 36 + 4 ÷ 2 × 5 – 15 + 50 = 81 = 36 + 2 × 5 + 35 = 36 + 10 + 35 = 81 It is the correct equation. 3) By substituting the above signs we get, Equation: 182 O 2 N 4 B 15 C 30 X 351 182 ÷ 2 × 4 + 15 – 30 = 351 = 91 × 4 – 15 = 349 = 349 ≠ 351 It should be 349 but it is given as 351, thus it is the incorrect equation. 4) By substituting the above signs we get, Equation: 642 O 2 N 3 C 100 B 10 X 875 642 ÷ 2 × 3 – 100 + 10 = 875 = 321 × 3 – 90 = 873 = 873 ≠ 875 It should be 873 but it is given as 875, thus it is the incorrect equation. Thus, Equation NUMBER 2 is correct. |
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