Number Sequences • Medium 1 Set
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Answer key & explanations
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Find the next number: 8, 24, 72, 216, 648, ?
Rule: The pattern is geometric: multiply by 3 each step.
So the next number is 1944.
Find the next number: 8, 24, 72, 216, 648, ?
Rule: The pattern is geometric: multiply by 3 each step.
So the next number is 1944.
Find the next number: 5, 14, 23, 32, 41, ?
Rule: The pattern is an arithmetic sequence: add 9 each step.
So the next number is 50.
Find the next number: 1, 11, 15, 25, 29, ?
Rule: The pattern alternates: +10, +4, +10, +4, ... so the next step is +10.
So the next number is 39.
Find the next number: 11, 21, 31, 41, 51, ?
Rule: The pattern alternates: +10, +10, +10, +10, ... so the next step is +10.
So the next number is 61.
Find the next number: 1, 2, 3, 5, 8, ?
Rule: This follows a Fibonacci-like rule: each term is the sum of the previous two.
So the next number is 13.
Find the next number: 8, 2, 10, 12, 22, ?
Rule: This follows a Fibonacci-like rule: each term is the sum of the previous two.
So the next number is 34.
Find the next number: 4, 14, 24, 34, 44, ?
Rule: The pattern is an arithmetic sequence: add 10 each step.
So the next number is 54.
Find the next number: 7, 17, 27, 37, 47, ?
Rule: The pattern is an arithmetic sequence: add 10 each step.
So the next number is 57.
Find the next number: 1, 3, 9, 27, 81, ?
Rule: The pattern is geometric: multiply by 3 each step.
So the next number is 243.