Pebbles and Patterns

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Class 6A go on a Geography trip to Eastbourne and investigate the size of pebbles on the beach. Jonnie picks up seven small pebbles and measures their lengths in millimetres. 

The lengths of the first six pebbles are: 

1, 1, 1, 4, 7, 13 

Assuming that the pattern that you observed above continues to hold, work out the length of Jonnie’s seventh pebble.

Comments

  1. Anonymous21 April 2021 at 06:52

    The pattern is that after the first 3 numbers, if you add up the three numbers behind your number, you get your number. This means you will get 13 + 7 + 4 + 1 = 25

    ReplyDelete

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