UPSC CSAT 2026 Maths PYQ / Statement-based Data-Sufficiency Question - 4 / EXPLAINED

UPSC CSAT 2026 PYQ Question 4 Set A 4. Question : X is a collection of certain odd numbers whereas Y is a collection of certain even numbers. T consists of the numbers all of which are either from X or from Y. Is every number of T from Y? Statement I : The sum of any two numbers belonging to T is even. Statement II : If both p and q are picked from T, then (p - 1)q is even. Also important for UPSC 2027, UPSC CDS, UPSC CAPF, SSC CGL Mains 2026, Mains 2027, RRB etc. This video explains a quite lengthy albeit easy, doable and conceptual maths question that came in UPSC CSAT 2026. Such statement based data-sufficiency questions are increasingly common in UPSC exams. The question has been explained in a #beginnerfriendly approach taking the help of the pyq . Useful for #upsccsatpreparation #ssccglmathspreparation #rrbntpc2026 #upsc_csat #upsc_cds #upscprelims #upscprelims2027 #upscprelims2026 Please like the video and share it with your friends. Subscribe for more such videos!!