without any GD and PI can i get Admission in IBS after taking IBSAT..?

Hello,
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You may get Admission with GD and PI but those schools aren't well reputed.
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No reputated business school entertain a student without GD and PI. It's a basic step for getting admission in IBS.
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Don't be so tensed about it. It's just a basis for testing your knowledge. GD will be of testing your skills and PI will be about you.
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So, it's best to take admission in best IBS schools and make a great career. You will be getting placements in top companies which gives you good income
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Hope this was informative in clearing your doubt.