The table below gives the ranks secured by five different students in three different subjects in a qualifying examination:  Subject →   Maths      Physics     Chemistry     Students ↓  A 12 22 14 B 15 21 15 C 3 15 22 D 14 24 1 E 18 13 2 Find the positive difference between the ranks secured by A in Physics and in Maths.

25 10 15 20

10

Difference in ranks of A in physics & maths = 22 - 12 = 10