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Solution

✅ Correct Option: 4

Count odd days. Up to 2000 there are 00 odd days. From 2001 to 2012 there are 1212 years with 33 leap years, giving 9+6=159 + 6 = 15 days, i.e. 11 odd day. In 2013 (ordinary year), days up to 15 August =31+28+31+30+31+30+31+15=227= 31+28+31+30+31+30+31+15 = 227, and 227 mod 7=3227 \bmod 7 = 3. Total odd days =1+3=4= 1 + 3 = 4, which corresponds to Thursday.

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