Select the correct combination of mathematical signs to sequentially replace the × signs and to balance the following equation.
11 × 15 × 78 × 6 × 18 × 160
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e ×, +, ÷, -, =
| Equation | Result |
|
Sequentially replacing × sign with +, × , -, ÷, = 11 + 15 × 78 - 6 ÷ 18 = 160 11 + 15 × 78 - 6 ÷ 18 = 1180.67 |
Wrong placement |
|
Sequentially replacing × sign with ×, +, ÷, -, = 11 × 15 + 78 ÷ 6 - 18 = 160 |
Correct placement |
| Conclusion |
In hit and trial the correct placement of signs is found in second step only. × in equations must be replaced with ×, +, ÷, -, = in order to make the equation correct. |