Hello dear student,

First of all honours degree is a bit different than simple BSc degree. As if we are talking about maths here so in BSc maths you will have to study other subjects also with the maths subject that will be your specialisation. Why in BSC Hons maths you have to learn different topic related to mathematics only and you will not have to study different subjects. I hope this was clear and it was helpful to rectify your doubts

Thank you