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Number System Questions for SSC CGL

Free, AI-curated practice for the Number System section of SSC CGL. We have 31+ verified questions in this bank. Below: 5 sample questions. Sign up free to unlock unlimited practice + AI explanations + per-topic analytics.

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📍 Number System is also tested in:
SSC GD (58)SSC MTS (41)SSC CHSL (29)RRB NTPC (29)

Sample questions

Q1 · hard · AI-verified
Two numbers are in the ratio 3:4. If their LCM is 180, what is the difference between the two numbers?
  1. 18
  2. 20
  3. 12
  4. 15
Q2 · medium · PYQ 2024
Replace * by the smallest digit so that 723*56* is divisible by 6.
  1. 1
  2. 4
  3. 3
  4. 2
Q3 · hard · AI-verified
How many prime numbers are there between 60 and 80?
  1. 7
  2. 6
  3. 4
  4. 5
Q4 · hard · AI-verified
A number N is formed by writing consecutive integers from 1 to 50 as: 123456789101112...4849. How many times does the digit 3 appear in N?
  1. 17
  2. 16
  3. 14
  4. 15
Q5 · medium · PYQ 2011
What is the remainder when (3)²¹ is divided by 5?
  1. 2
  2. 3
  3. 1
  4. 4
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