Explanation : A leap year consists of 366 days, so that there are 52 full weeks (and hence 52 Sundays) and two extra days. These two days can be (i) Monday, Tuesday (ii) Tuesday, Wednesday, (iii) Wednesday, Thursday (iv) Thursday, Friday (v) Friday, Saturday (vi) Saturday, Sunday (vii) Sunday, Monday Of these 7 cases. the last two are favourable