Practice Test GeeksOC - Opportunity Class Test Practice Test
← All OC Flashcard Decks

Numerical Reasoning and Number Patterns Flashcards

6 cards from real OC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Numerical Reasoning and Number Patterns flashcards as text

  1. A snail climbs 3 metres during the day and slides back 1 metre at night. How many days does it take to reach 10 metres?

    Answer: 5 days

    Net gain is 2 m/day; after 4 days it is at 8 m, then on day 5 it climbs 3 m to reach 11 m ≥ 10 m — 5 days.

  2. Which set of numbers has a mean of 12?

    Answer: 8, 10, 14, 16

    (8 + 10 + 14 + 16) ÷ 4 = 48 ÷ 4 = 12.

  3. What is the median of: 3, 7, 9, 15, 21?

    Answer: 9

    The median is the middle value of an ordered list; here it is 9.

  4. A number is multiplied by itself and the result is 196. What is the number?

    Answer: 14

    14 × 14 = 196, so the number is 14.

  5. What is the HCF (highest common factor) of 36 and 48?

    Answer: 12

    Factors of 36: 1,2,3,4,6,9,12,18,36; factors of 48: 1,2,3,4,6,8,12,16,24,48; HCF = 12.

  6. If you arrange the digits 3, 7, 1, and 5 to make the largest possible 4-digit number, what do you get?

    Answer: 7531

    Arrange digits from largest to smallest: 7, 5, 3, 1 → 7531.

How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. education.nsw.gov.au — Late registration, registration, eligibility, fees, passing score, exam format, time limit, test delivery, exam information · verified Nov 2026