Franks sequence

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Frank is making a sequence of numbers. The first number is 1 and the third is 9. Frank gets his sequence by multiplying the previous value by the same number each time. Write in the three missing numbers in the sequence shown below


1, ____, 9, ____, ____

Comments

  1. Rithvik28 June 2022 at 16:24

    The pattern of the sequence is to multiply the previous number by some constant number. This means that to get from 1 to 9 in two goes you need to multiply it by 3. This is because 1 * 3 = 3 and then 3 * 3 = 9. This will allow us to get the solution 1, 3, 9, 27, 81

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