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AMO 2027 Grades 4-5 SET 9 - Self-study Question 1

AMO · AMO 2027 Grades 4-5 SET 9 - Self-study

Question 1

Find the missing number.

a) 10, 30, 32, 96, 98, 294, ( ), ( ), …

b) 5, 16, 49, 148, ( ), ( ), …

c) 6, 10, 7, 11, 8, 12, ( ), ( ), …

d) 5, 10, 17, 26, 37, 50, ( ), ( ), …

e) 50, 49, 47, 44, 40, 35, ( ), …

f) 1, 2, 5, 10, 17, 26, ( ), …?

Answer entry: separate parts (a)–(f) with semicolons and numbers within a part with commas; enter ten numbers in total.

**Editorial input note:** Use no spaces before or after semicolons and commas.