In the following question, * stands for any of the mathematical signs at different places, which are given as choices under each question. Select the choice with the correct sequence of signs which when substituted makes the question as a correct equation.
24 * 4 * 5 * 4

As, 73 + 82 = 14
? (7 - 3) + (8 + 2) = 14
? 4 + 10 = 14
? 14 = 14 and 91 + 21 = 11
? (9 - 1) + (2 + 1) = 11
? 8 + 3 = 11 ? 11 = 11
Similarly, 86 + 24 = (8 - 6) + (2 + 4) = 2 + 6 = 8

Given, 7 * 7 * 2 * 1 = 12
Let us check all the options one by one.
From option (a), putting the signs in given equation, we get
7 x 7 - 2 ÷ 1 = 12 ? 7 x 7 - 2 = 12
? 49 - 2 = 12 ? 47 = 12
? LHS ? RHS
So, option (a) is incorrect.
From option (b), putting the signs in given equation, we get
7 + 7 - 2 x 1 = 12 ? 7 + 7 - 2 = 12
? 14 - 2 = 12 ? 12 = 12
Hence, option (b) is correct and there is no need to check remaining options .

Let us check all the options one by one.
From option (a),
65 - 40 + 11 = 36 ? 76 - 40 = 36
? 36 = 36 ? LHS = RHS
So, option (a) is correct and hence there is no need to check remaining options.

Let us check all the options one by one.
From option (a),
6 - 5 + 4 = 34 (using VBODMAS rule)
? 10 - 5 = 34 ? 5 = 34
? LHS ? RHS
So, option (a) is incorrect
From option (b),
6 x 5 + 4 = 34 (using VBODMAS rule)
? 30 + 4 = 34 ? 34 = 34
? LHS = RHS
So, option (b) gives us the correct answer and hence, there is no need to check remaining options.

? 6%12C3@8   $   3 = ?
After replacing the sign according to the question
? 6 + 12 ÷ 3 x 8 - 3 = ?
Apply the BODMAS Rule
? 6 + 4 x 8 - 3 = ?
? 6 + 32 - 3 = ?
? 38 - 3 = ?
? ? = 35

Apply all option one by one
? 16 x 6 ÷ 4 = 24
? 96/4 = 24 ? 24 = 24

? 9 ÷ 3 x 3 - 3 = 6 ? 3 x 3 - 3 = 6
? 9 - 3 = 6 ? 6 = 6

? 8 * 6 * 96 * 2 = 0
? 8 x 6 - 96 ÷ 2 = 0
? 48 - 48 = 0

? 8 x 20 ÷ 3 + 9 - 5 = 38 ? 8 x 20 ÷ 5 + 9 - 3 = 38
? 8 x 4 = 9 - 3 = 38 ? 32 + 9 - 3 = 38

? (18 ÷ 9) + 3 x 5 = 45
? (18 + 9) ÷ 3 x 5 = 45 ? 27 ÷ 3 x 5 = 45