Nitesh is 25th from left end and Sunil is 8th from right end . If there are total 40 students in row . Find how many students are between Nitesh and Sunil

7

Total number of students = position from left + position from right + number of students between them

                                   40 =   25 + 8 + number of students between them

                        40 -25 - 8 = number of students between them

                                    7   = number of students between them