SG chevron_right Primary 2 chevron_right Number and Algebra

Please help this has me stumped.

SG chevron_right Secondary 5 chevron_right Add Math: Geometry and Trigonometry

What of these sentence are proposition

SG chevron_right Grade: N/A chevron_right Strand: N/A

How many fingers are on 8 hands

SG chevron_right Primary 6 chevron_right Geometry

Prelim Angles question

SG chevron_right Secondary 5 chevron_right Add Math: Calculus

How to solve?i need an explanation