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Select the correct combination of mathematical signs to replace the sign (*) and balance the following equation.

15 * 4 * 26 * 2 * 7 * 66


1. +, ×, -, +, =
2. +, ×, ÷, -, =
3. ×, +, ÷, -, =
4. ×, +, -, ÷, =

1 Answer

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Best answer
Correct Answer - Option 3 : ×, +, ÷, -, =

1)  +, ×, -, +, =

Given expression: 15 * 4 * 26 * 2 * 7 * 66

After replacing the * by signs given, we get:

15 + 4 × 26 - 2 + 7 = 66

=> 14 + 104 – 2 + 7 = 66

=> 125 – 2 = 66

=> 123 ≠ 66

2) +, ×, ÷, -, =

Given expression: 15 * 4 * 26 * 2 * 7 * 66

After replacing the * by signs given, we get:

15 + 4 × 26 ÷ 2 - 7 = 66

=> 15 + 52 – 7 = 66

=> 67 – 7 = 66

=> 60 ≠ 66

3) ×, +, ÷, -, =

Given expression: 15 * 4 * 26 * 2 * 7 * 66

After replacing the * by signs given, we get:

15 × 4 + 26 ÷ 2 - 7 = 66

=> 60 + 13 – 7 = 66

=> 73 – 7 = 66

=> 66 = 66

4) ×, +, -, ÷, =

Given expression: 15 * 4 * 26 * 2 * 7 * 66

After replacing the * by signs given, we get:

15 × 4 + 26 - 2 ÷ 7 = 66

=> 60 + 26 – 0.29 = 66

=> 86 – 0.29 = 66

=> 85.71 ≠ 66

Hence, '×, +, ÷, -, =' is the correct answer.

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