1. He was not able tell the exact date when the last system updation was carried out.
2. He was not in a position to tell the exact date when the last system updation was carried out.
Could you please explain which of the two sentences is correct.
Both. #1 He couldn't do it. #2 This implies that he couldn't do it in that situation but might be able to in some other situation.
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Both.
#1 He couldn't do it.
#2 This implies that he couldn't do it in that situation but might be able to in some other situation.
eg I'm not in a position to tell that because I am not at my desk right now.
Say update, not updation.
In addition to Clive's corrections, there is another typo:
1. He was not able to tell the exact date ...