Discussion
If ‘+’ means ‘÷’, ‘–’ means ‘+’, ‘×’ means ‘–’ and ‘÷’ means ‘×’, then what will be the value of the following expression?
56 + 8 – 42 × 7 ÷ 4 = ?
Answer: B
Replace each sign by its changed meaning: + means divide, - means plus, x means minus and the division sign means multiply. The expression 56 + 8 - 42 x 7 / 4 then becomes 56 / 8 + 42 - 7 x 4. By the order of operations the division and the multiplication come first, giving 7 + 42 - 28, which is 21. The answer is 21, option (B). The values 28, 14 and 18 come from using a sign with its usual meaning or working strictly from left to right.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development