Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
234 * 345 * 456 * 567 * 678 * 12
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. +, −, +, −, =.
Given equation: 234 * 345 * 456 * 567 * 678 * 12
Option 1: +, −, +, −, =
After interchanging the expression becomes:
= 234 + 345 − 456 + 567 − 678 = 12
= 1146 − 456 − 678
= 1146 - 1134
= 12
Hence, +, −, +, −, = is the correct answer.