Question
Download Solution PDFWhich two signs and two numbers should be interchanged in the following equation to make it correct?
40 - 220 ÷ 2 × 2 + 20 = 200
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFBODMAS Table:
Given Equation: 40 - 220 ÷ 2 × 2 + 20 = 200.
Now, Interchanging two signs and two numbers,
1) 20 and 40, + and -
Given equation: 40 - 220 ÷ 2 × 2 + 20 = 200
After interchanging ‘20 and 40, + and -’, we get:
L.H.S = 20 + 220 ÷ 2 × 2 - 40
= 20 + 110 × 2 - 40
= 20 + 220 - 40
= 240 - 40
= 200 = R.H.S.
2) 2 and 20, + and ×
Given equation: 40 - 220 ÷ 2 × 2 + 20 = 200
After interchanging ‘2 and 20, + and ×’, we get:
L.H.S = 40 - 220 ÷ 20 × 20 + 2
= 40 - 11 × 20 + 2
= 40 - 220 + 2
= 42 - 220
= -178 ≠ R.H.S.
3) 220 and 40,+ and ×
Given equation:40 - 220 ÷ 2 × 2 + 20 = 200
After interchanging ‘220 and 40,+ and ×’, we get:
L.H.S = 220 - 40 ÷ 2 + 2 × 20
= 220 - 20 + 2 × 20
= 220 - 20 + 40
= 260 - 20
= 240 ≠ R.H.S.
4) 220 and 20, ÷ and ×
Given equation:40 - 220 ÷ 2 × 2 + 20 = 200
After interchanging ‘220 and 20, ÷ and ×’, we get:
L.H.S = 40 - 20 × 2 ÷ 2 + 220
= 40 - 20 × 1 + 220
= 40 – 20 + 220
= 260 - 20
= 240 ≠ R.H.S.
Hence, "Option 1" is the correct answer.Last updated on Jun 13, 2025
-> The SSC CGL Notification 2025 has been released on 9th June 2025 on the official website at ssc.gov.in.
-> The SSC CGL exam registration process is now open and will continue till 4th July 2025, so candidates must fill out the SSC CGL Application Form 2025 before the deadline.
-> This year, the Staff Selection Commission (SSC) has announced approximately 14,582 vacancies for various Group B and C posts across government departments.
-> The SSC CGL Tier 1 exam is scheduled to take place from 13th to 30th August 2025.
-> Aspirants should visit ssc.gov.in 2025 regularly for updates and ensure timely submission of the CGL exam form.
-> Candidates can refer to the CGL syllabus for a better understanding of the exam structure and pattern.
-> The CGL Eligibility is a bachelor’s degree in any discipline.
-> Candidates selected through the SSC CGL exam will receive an attractive salary. Learn more about the SSC CGL Salary Structure.
-> Attempt SSC CGL Free English Mock Test and SSC CGL Current Affairs Mock Test.
-> Candidates should also use the SSC CGL previous year papers for a good revision.