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Practice Test 6
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SSC CGL Number System Practice Test 6

15 fresh SSC CGL number system questions on factors, divisibility, HCF, LCM, and remainders.

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SSC CGL Practice Session

SSC CGL Number System Practice Test 6

15 fresh SSC CGL number system questions on factors, divisibility, HCF, LCM, and remainders.

Questions
10
Marking
+2 correct, -0.5 wrong
Format
15-question ad-supported session
Preview all 10 questions in SSC CGL Number System Practice Test 6 (no login required)
  1. HCF

    1. HCF of 16 and 24 is:

    • A. 4
    • B. 6
    • C. 8 (Correct)
    • D. 12

    Explanation: 8 is the greatest common factor.

  2. Divisibility

    2. Which number is divisible by 3?

    • A. 124
    • B. 135 (Correct)
    • C. 142
    • D. 151

    Explanation: The sum of digits is 9, so it is divisible by 3.

  3. Remainder

    3. Remainder when 389 is divided by 8 is:

    • A. 3
    • B. 4
    • C. 5 (Correct)
    • D. 6

    Explanation: 389 = 8 x 48 + 5.

  4. Factors

    4. Number of factors of 49 is:

    • A. 2
    • B. 3 (Correct)
    • C. 4
    • D. 5

    Explanation: 49 has factors 1, 7, and 49.

  5. Divisibility

    5. The smallest number to be added to 998 to make it divisible by 11 is:

    • A. 2
    • B. 3 (Correct)
    • C. 4
    • D. 5

    Explanation: 998 leaves remainder 8 on division by 11, so 3 more makes it divisible.

  6. LCM-HCF

    6. If HCF of two numbers is 5 and LCM is 300, and one number is 25, the other is:

    • A. 50
    • B. 60 (Correct)
    • C. 75
    • D. 90

    Explanation: Other number = (5 x 300) / 25 = 60.

  7. Unit Digit

    7. The unit digit of 3^4 is:

    • A. 1 (Correct)
    • B. 3
    • C. 7
    • D. 9

    Explanation: 3^4 = 81, so the unit digit is 1.

  8. Natural Numbers

    8. Sum of first 20 natural numbers is:

    • A. 190
    • B. 200
    • C. 210 (Correct)
    • D. 220

    Explanation: n(n+1)/2 = 20 x 21 / 2 = 210.

  9. Fraction Comparison

    9. Which is greatest?

    • A. 2/3 (Correct)
    • B. 3/5
    • C. 5/8
    • D. 7/12

    Explanation: 2/3 is approximately 0.667, the greatest here.

  10. Remainder

    10. Remainder when 5^2 is divided by 3 is:

    • A. 0
    • B. 1 (Correct)
    • C. 2
    • D. 3

    Explanation: 25 leaves remainder 1 on division by 3.