In the word 'MATHS' which of the following pairs of letters shows rotational symmetry?

Given:

Word = 'MATHS'

Concept used:

Rotational symmetry is a property where an object or word can be rotated by a certain angle and still look the same.

Calculation:

In the word 'MATHS,' the pairs of letters that exhibit rotational symmetry are:

'H' and 'S' - These letters match each other when the word is rotated 180 degrees (a half turn).

∴ The pairs of letters in the word 'MATHS' that exhibit rotational symmetry are H and S.