We saw a piece of graffiti that must have been painted by someone with a mathematical and sadistic side to them. It read as follows:
19387
7839
938
83
?
Obviously this is challenging the people who see it to work out what number replaces the question mark.
So what is it? Can you work it out?
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Answer at 9.00 on Monday
I think the sequence is writing an extra digit on the end then reversing the order, e.g.
19387
is the reverse of 7839 (1)
7839
is the reverse of 938 (7)
938
is the reverse of 83 (9)
so 83
is the reverse of 3 (8)
I dont know where the extra digit comes from but think the missing number is 3