In the following equation, two signs and two numbers need to be interchanged to make it correct. Select the appropriate signs and numbers from the given alternatives.
6 × 8 + 2 = 20
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. + and ×, 6, and 8.
| Understanding | Application |
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Given: 6 × 8 + 2 = 20 By inter-changing two numbers and two signs according to the options and solving them through the BODMAS rule, we will check: Option 1- + and ×, 2 and 8 L.H.S.= 6 + 2 × 8 = 6 + 16 = 22 R.H.S.= 20 L.H.S. is not equal to R.H.S. Option 2- × and +, 2 and 6 L.H.S.= 2 + 8 × 6 = 2 + 48 = 50 R.H.S.= 20 L.H.S. IS NOT EQUAL TO R.H.S. Option 3- × and + , 6 and 2 L.H.S.= 2 + 8 × 6 = 2 + 48 = 50 R.H.S.= 20 L.H.S. IS NOT EQUAL TO R.H.S. |
But is Option 4 i.e. + and ×, 6 and 8, we see, L.H.S.= 8 + 6 × 2 = 8 + 12 = 20 R.H.S.= 20 Here, L.H.S. is equal to R.H.S. Therefore, the answer is Option 4 i.e. + and ×, 6, and 8. |