| Q.12 | Which two signs and two numbers should be interchanged in the following equation to make it correct? 456 − 121 ÷ 234 − 345 + 11 = 334 | |
| Ans | 1. 11 and 121, + and − | |
| 2. 234 and 121, − and ÷ | ||
| 3. 345 and 121, + and ÷ | ||
| 4. 456 and 121, + and − |
Correct Ans Provided: 3