Number system and simplification
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- In the exam pattern: Computer Based Test (CBT), Arithmetic: 35 questions, 35 marks (RRB notice, 15 Apr 2024).
- Next exam day: CBT exam (expected): 25 May 2027 (Expected — an estimate, not announced).
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Practice this topic
Take a full mock →Q1 · Number system and simplification · EASY
What is the smallest number that must be added to 10,561 so that the result is divisible by 19?
Q2 · Number system and simplification · MEDIUM
Find the unit digit of the product 7^43 * 3^21.
Q3 · Number system and simplification · EASY
What is the HCF of 120, 150, and 210?
Q4 · Number system and simplification · EASY
Simplify: 15 + 3 * (4 - 2)^2 - 6 / 2
Q5 · Number system and simplification · EASY
If the number 3x42 is divisible by 9, what is the value of x?