Answer: Madhya Pradesh

Explanation:
Density of population in Madhya Pradesh
=> 603 x 105 / 308,144 = 195 / sq.km
=> In Andhra Pradesh = 761 x 105 / 275 068 = 276/sq.km
=> In Orissa = 384 x 105/ 155,707 = 237/ sq.km
=> In Maharashtra = 968 x 105/ 307,713 = 314/ sq.km
=> In Tamil Nadu = 624 x 105/ 130,058 = 480/ sq.km
=> The least density is in M.P.

Answer: 1,35,47,520

Explanation:
Rural population in Orissa
=>  384 x (105 x 72)/100 = 2,76,48,000
=> Number of females
=> 49/100 x 2,76,48,000 = 1,35,47,520

Answer: 4.5%

Explanation:
Female population in Uttar Pradesh in 2001
=> (1660 – 875) x 105 = 785
=> That in 2006 = 1731 – 911 = 920
=> Percentage increase = 35/785 x 100 = 4.5%

Answer: Madhya Pradesh 

Explanation:
The ratio of rural population in 2001 to 2006 for Madhya Pradesh
=> 0.72 x 603 / 0.71 x 674 = 0.907
=> For Orissa = 0.73 x 368 / 0.72 x 384 = 0.97
=> For Maharashtra = 0.68 x 968 / 0.66 x 1013 = 0.98
=> For Andhra Pradesh = 0.69 x 761 / 0.67 x 823 = 0.952
=> For Tamil Nadu = 0.70 x 624 / 0.68 x 697 = 0.922
=> The least is for Madhya Pradesh

Answer: 456

Explanation:
In 2006, average number of males per state, for the given states
=> Total male population / total number of states
=> = 3192 / 7
=> 456