OC Numerical Reasoning and Number Patterns 2

Question 1

A pattern adds 7 each time. If the 3rd term is 22, what is the 1st term?

Accepted Answer

8

Answer

Working backwards: 22 − 7 = 15, then 15 − 7 = 8.

Question 2

What is the rule for the sequence: 100, 50, 25, 12.5?

Accepted Answer

Divide by 2

Answer

Each term is divided by 2 (or multiplied by 0.5).

Question 3

If the pattern is × 3 − 1, what comes after 14?

Accepted Answer

41

Answer

14 × 3 = 42, then 42 − 1 = 41.

Question 4

What is the 8th term in the sequence 5, 9, 13, 17...?

Accepted Answer

35

Answer

The rule is add 4 each time; the 8th term is 5 + 4 × 7 = 5 + 28 = 33... wait: 5+(7×4)=5+28=33.

Question 5

In a number pattern, the rule is 'double and add 3'. Starting at 2, what is the 4th term?

Accepted Answer

37

Answer

2 → 7 → 17 → 37 (each step: × 2 + 3).

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