Advanced Mathematics Primary 3 Whole Numbers

The table numbers at a kopitiam follow a pattern: 100, 96, 88, 72, ___. What is the missing number?

A 40
B 56
C 36
D 104
Show Worked Solution

Worked Solution

Step 1 Find the differences between consecutive terms: 100 − 96 = 4 96 − 88 = 8 88 − 72 = 16 Step 2 Identify the pattern in the differences: 4, 8, 16 — each difference doubles. Step 3 Find the next difference: 16 × 2 = 32. Step 4 Apply it: 72 − 32 = 40. Answer: 40

Correct answer: 40

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