Now every thing is clear for dslr now need little

I made up my mind for D3100 or D5100, i will buy any one camera in this 2
but confused in lens can i go for this two lens set or this single lens or please give your suggestion

1 Nikkor AF-S 18-55mm Lens VR & Nikkor AF-S DX 55-300 VR ED f/4-5.5.6 G
OR
2 Nikkor AF-S 18-200mm f/3.5-5.6G IF-ED AF-S II VR DX Zoom

So please suggest what is good buy for me

I would get the two lens set. Having to carry a big 18 to 200 zoom all the time would be a hassle.

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The 18-200 mm lens is a good one lens solution.

Depending upon the subjects you tend to shoot, NOT needing to change lenses six or seven times per shoot, will make your life much easier

If you need the extra reach of the 55-300 mm, then of course the single 18-200 mm is not for you, no matter how convenient