Each of the four managers – Dev Sharma, Prakhar Tekade, Rohan Guha and Rohini Raheja – worked for an integral number of years in each of the three companies – RIL, TCS and ITC. The sums of the number of years spent in the three companies together were distinct for the four managers. The sums of the number of years spent by the four managers together in the RIL, TCS and ITC were 12, 13 and 14 respectively. No manager spent an equal number of years in any two companies. No two managers spent an equal number of years in any company.(Note: Each manager worked for atleast one year in each company). It is also known that:

(i) Among the three companies, Rohini Raheja spent the least time in TCS and the maximum in ITC.

(ii) The number of years spent by Dev Sharma and Rohan Guha in ITC were 4 and 2 respectively.

(iii) The sum of the number of years spent in the three companies together by Rohan Guha was not less than that of Dev Sharma.

(iv) The sum of the number of years spent in the three companies together by Prakhar Tekade was 16.(v) The absolute difference between the number of years spent by Dev Sharma in RIL and the number of years spent by Rohan Guha in TCS was 2.

1. What was the absolute difference between the number of years spent by Rohan Guha in RIL and Rohini Raheja in ITC?

2. Among the four managers, who spent the least time in ITC?

3. What was the number of year(s) spent by Rohini Raheja in TCS?

4. Find the sum of the number of years spent in the three companies together by Rohan Guha.