A series is given, with one word missing. Choose the correct alternative from the given ones that will complete the series. nephew, anther, tenses, prunes, preens, ?
In a row of boys, Rahul’s position from the right end is 39th and Pankaj’s position from the left end is 53rd. After interchanging their position, Rahul’s position becomes 64th from the right end. How many boys are there in the row?