By Interchanging the given two numbers which of the following equation will be…
2021
By Interchanging the given two numbers which of the following equation will be incorrect?
5 and 2
- A.
2 + 8 × 7 ÷ 4 – 5 = 17
- B.
8 + 6 × 2 ÷ 5 – 4 = 19
- C.
6 + 8 × 2 ÷ 4 – 5 = 14
- D.
5 + 2 × 6 ÷ 4 – 1 = 7
Attempted by 33 students.
Show answer & explanation
Correct answer: D
We must interchange 5 and 2 in each equation and solve using BODMAS:
Option 1: 5 + 8 × 7 ÷ 4 - 2 => 5 + 14 - 2 = 17 (Correct)
Option 2: 8 + 6 × 5 ÷ 2 - 4 => 8 + 15 - 4 = 19 (Correct)
Option 3: 6 + 8 × 5 ÷ 4 - 2 => 6 + 10 - 2 = 14 (Correct)
Option 4: 2 + 5 × 6 ÷ 4 - 1 => 2 + 7.5 - 1 = 8.5 (This is NOT 7)
Since the question asks for the equation that will be incorrect, Option 4 is the answer.
Final Answer: Option 4