Six children G, H, I, J, K and L are sitting around a circle facing opposite to the centre. G is sitting second to the left of K. H is sitting to the immediate right of G and third to the left of J. I is sitting to the immediate left of J. Who is sitting to the immediate left of G?

Let's place the 6 children facing outwards (away from the center). Left means clockwise, Right means counter-clockwise.
G is sitting second to the left of K. Let's place K at the top. Moving 2 places clockwise gives G.

H is sitting to the immediate right of G (1 place counter-clockwise from G).

H is also third to the left of J. Since it's a 6-person circle, third to the left means directly opposite to J. So J is opposite to H.

I is sitting to the immediate left of J (1 place clockwise from J).

The only spot left belongs to L.

Let's check the positions clockwise:
If K is at position 1:

G is at position 3 (second to the left).

H is at position 2 (immediate right of G).

J is at position 5 (opposite H).

I is at position 6 (immediate left of J).

L must be at position 4.

The person sitting to the immediate left of G (position 4) is L.