I completed my graduation in 2014 and will write CAT 2019. As I do not have work experience, so will it be a problem during the PI&GD?

Hello dear,
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You won't face any problem.
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Let me help you out with some tips which can help you out in GD and PI,
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Don't answer such questions which you don't know
They will ask you,"tell me about yourself". Be prepared for that.
Be attentive and confidential use your voice to louder.
Read newspapers so that you will be able to answer anything of general knowledge.
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Keep a confidence like a,
Leadership
Team approach.
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Imporve your communication skills.
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And remaining you will cover yourself there's no need to worry.
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Be prepared with written test.
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Best of luck

Dear student,
As you have completed your graduation in 2014,
And you are going to appear for cat 2019.
But you don't have experience.
Its not a problem in GD and PI

Experience will just help you to get the call from the IIM.
You can also get the call from IIM if you secure good score and your academics are best.

Good luck