Correct Answer: + - =
Explanation:
Solve by using all option one by one.
 Given equation is 
 24 * 16 * 8 * 32
 Taking the sign of option (D),
 ⇒ 24 + 16 - 8 = 32
 Apply the BODMAS Rule in equation.
 ⇒ 40 - 8 = 32 ⇒ 32 = 32
 Hence, correct group of sign is option (b).
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