nucleus or Allen best for jee preparation and which institute will prepare for my 12 board exam
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As per my point of view Allen is best.
It provides us with all the study material which is required for us.
It helps us in solving many problems as much as we can.
study material+test series of resonance are perfect as they are just up to the level of jee main/advanced!Resonance cares everything for u-be it ur board,practical,main,Advanced everything!