Select the correct combination of mathematical signs to sequentially replace the signs and balance the given equation.
74 * 34 * 78 * 23 * 23 * 30

Correct option is C

Given,
74 * 34 * 78 * 23 * 23 * 30
Change the signs +, -, +, -, = in place of * and using the sings of BODMAS rule-
74 + 34 – 78 + 23 – 23 = 30
131 – 101 = 30
30 = 30
Therefore, the correct answer is (c).