# A perfect riddle

I consist of 1 and 3
depending on how you see me

7 might be lucky
but I am the youngest of all the perfects

Turn me around
and I become prey for the Irish

Take off my top
and I am nothing

Take off my bottom
and I am a well-rounded fellow

What am I, a perfect answer I am?

6

I consist of 1 and 3 depending on how you see me

$$6 = 3 +1+1+1$$ (one 3 and three 1s)

7 might be lucky but I am the youngest of all the perfects

6 is the smallest perfect number

Turn me around and I become prey for the Irish

Take off my top and I am nothing

remove the top part of the 6 and you end up with 0 (zero or an empty space).

Take off my bottom and I am a well-rounded fellow

remove the bottom part of a 6 and it looks like rainbow

• Nice answer but you got the last three clues wrong – Anthony Pham Apr 3 '16 at 21:30
• Technically I got 2 wrong and skipped one. I'm working on them. – Marius Apr 3 '16 at 21:38
• The Irish clue would be a snake. ( My guess anyway ) – Carl Apr 3 '16 at 23:39
• turning it around it looks like number 9 maybe? – elias Apr 4 '16 at 5:24
• @PythonMaster Surely, take off my top and end up with nothing, means 6 becomes 0? – Saikat Apr 4 '16 at 6:41

A rainbow?

There are 7 colours in a rainbow, turn around and you'd have the pot of gold. May be well off here!

• I'm not convinced this covers all the clues. – Reti43 Apr 3 '16 at 18:21

Complementing/correcting a part of Marius answer:

Take off my bottom and I am a well-rounded fellow

remove the bottom part and it becomes a circular paraboloid

• Close... but no cigar – Anthony Pham Apr 3 '16 at 21:30

8

I consist of 1 and 3
depending on how you see me


a 1 and 3 next to each other make an 8 - especially on a digital clock, for example

7 might be lucky
but I am the youngest of all the perfects


perfectly symmetrical up/down, right/left

Turn me around
and I become prey for the Irish


still working on this one, but I think it has to do with the similarities to a snake, which the Irish captured

Take off my top
and I am nothing


remove the top half of an 8 and it's a 0

Take off my bottom
and I am a well-rounded fellow


Take off the bottom half and the top half is still "well-rounded"