Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science) 
		 
			 
			 
			 
			 
			 
			 
			 
			 
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Jagat Chaudhary Best Answer
using Descartes rules of sign and intermediate value theorem, we can say that P and R are true. Q is false. please see attached image for step by step solution Thankyou