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Practice Test 5
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SSC CGL Number System Practice Test 5

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

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SSC CGL Practice Session

SSC CGL Number System Practice Test 5

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

Questions
11
Marking
+2 correct, -0.5 wrong
Format
15-question ad-supported session
Preview all 11 questions in SSC CGL Number System Practice Test 5 (no login required)
  1. Divisibility

    1. Which number is divisible by 9?

    • A. 234
    • B. 243 (Correct)
    • C. 254
    • D. 262

    Explanation: Sum of digits of 243 is 9.

  2. HCF

    2. HCF of 18 and 24 is:

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

    Explanation: 6 is the greatest common factor.

  3. LCM

    3. LCM of 8 and 12 is:

    • A. 24 (Correct)
    • B. 36
    • C. 48
    • D. 96

    Explanation: 24 is the least common multiple.

  4. Remainder

    4. When 257 is divided by 7, the remainder is:

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

    Explanation: 257 = 7 x 36 + 5.

  5. Even-Odd

    5. An odd number multiplied by an even number is always:

    • A. odd
    • B. even (Correct)
    • C. prime
    • D. composite

    Explanation: Any product with an even factor is even.

  6. Square Numbers

    6. Which is a perfect square?

    • A. 196 (Correct)
    • B. 198
    • C. 202
    • D. 206

    Explanation: 196 = 14^2.

  7. Divisibility

    7. The smallest number to be added to 999 to make it divisible by 11 is:

    • A. 1
    • B. 2 (Correct)
    • C. 3
    • D. 4

    Explanation: 999 leaves remainder 9 when divided by 11.

  8. LCM-HCF

    8. If HCF of two numbers is 6 and LCM is 180, and one number is 30, the other is:

    • A. 24
    • B. 30
    • C. 36 (Correct)
    • D. 42

    Explanation: Other number = (6 x 180)/30 = 36.

  9. Unit Digit

    9. Unit digit of 7^4 is:

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

    Explanation: 7^4 ends in 1.

  10. Natural Numbers

    10. Sum of first 10 natural numbers is:

    • A. 45
    • B. 50
    • C. 55 (Correct)
    • D. 60

    Explanation: n(n+1)/2 = 55.

  11. Remainder

    11. The remainder when 2^5 is divided by 3 is:

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

    Explanation: 2^5 = 32 and 32 leaves remainder 2.