Find the name of the Person

In my core I have 5 But 500 stand in the beginning and the end of mine. I also include the first letter and the first number to make me complete. I am the name of a King. 

Who am I??

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Find at least two words..

Find an word which is singular, add an 's' and it becomes plural, and add another 's' it becomes singular again???

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Find hidden words

What four related words are merged here:

SWAS  PURI    UINM   NTTU   MGER   MNER

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Form two squares

Move three matches to make two squares...

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Arrange 5 squares by 3

Move six matches by that five squares are to be formed...

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Arrange the equilateral triangles

Move three matches to make four equilateral triangles..remember no overlapping....

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Swimming fish match stick puzzle

Turn the fish around by moving only three matches,don't do overlapping...

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