Before the Koi Mil Gaya song, the stage is filled with rotten tomatoes but when Tina reaches it, it's clean.
When Anjali reads the letter from her birth mother, the writing on the letter disappears and reappears between shots.
Rahul reaches the summer camp and runs to where the kids etc are doing prayers, his black bag in his left hand. When he arrives at the door, the bag is in his right hand.
While dancing at the summer camp, Anjali is wearing a ring with AUM in her right hand's finger, however when she moves her hand on Rahul's face, she is wearing ring with a diamond. Then afterward, again the AUM ring appears.
In one scene where Anjali and Rahul are talking at school, Anjali is leaning on a phone booth. When she moves away, the receiver falls, In the next shot, it's in its place again.
During both the basketball scenes, Rahul dribbles with his back facing the basket. Hence his astonishment when Anjali steals the ball is not justified.
The characters refer to Tina as having come from London, yet she studied at the University of Oxford. The University of Oxford is in the city of Oxford, not London.
Tina says in her eighth letter to Anjali(daughter) that she should make Rahul and Anjali(college one) reunite. The whole idea could have been futile since Anjali(college one)'s fate of being married or not is unknown to Tina.
Tina gave her daughter 8 letters for her each birthday. When Anjali reads her 8th letter she is 8 years old. That means she must have been reading since she was 1 year old.