Question : Direction: Choose the appropriate combination of signs to solve the equation.
(16 + 18) * (21 - 11) * 32 * 8
Option 1: - x =
Option 2: - = -
Option 3: + = -
Option 4: / - =
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Correct Answer: - = -
Solution : Given – (16 + 18) * (21 - 11) * 32 * 8
Solving the equation by substituting the options.
Option first: - x =
(16 + 18) - (21 - 11) x 32 = 8. Here, LHS is not equal to RHS, so the option is wrong.
Option second: - = -
(16 + 18) - (21 - 11) = 32 - 8 ⇒ 24 = 24.
Here, LHS = RHS , so this option is the correct answer.
Option third: + = -
(16 + 18) - (21 - 11) x 32 = 8. Here, LHS is not equal to RHS, so the option is wrong.
Option fourth: / - =
(16 + 18) - (21 - 11) x 32 = 8. Here, LHS is not equal to RHS, so the option is wrong.
Hence, second option is correct.
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