Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
11 * 7 * 345 * 5 * 31 = 115
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. ×, +, ÷, −.
Given equation: 11 * 7 * 345 * 5 * 31 = 115
Option 1: +, ×, ÷, −
After interchanging the expression becomes:
= 11 + 7 × 345 ÷ 5 − 31 = 115
= 11 + 7 × 69 − 31
= 11 + 483 − 31
= 463 is not equal to 115.
As we have found our answer, there is no need to check further options.
Option 2: ×, +, ÷, −
After interchanging the expression becomes:
= 11 × 7 + 345 ÷ 5 − 31 = 115
= 11 × 7 + 69 − 31
= 77 + 69 − 31
= 115 is equal to 115.
As we have found our answer, there is no need to check further options.
Hence, option 2 is the correct answer.