Discussion
A number leaves remainder 4 when divided by 7. The remainder when twice that number is divided by 7 is:
Answer: A
Write the number as \(7k + 4\). Twice it is \(14k + 8 = 7(2k + 1) + 1\), so the remainder is 1. Working with remainders directly, \(2 \times 4 = 8\) and \(8\) leaves 1 on division by 7 - remainders can be multiplied and then reduced.
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