NCERT Figure it Out 1 - Q3 - Number Play
Question: Classify as Always / Sometimes / Never True: (i) sum of two evens is a multiple of 3; (ii) if not divisible by 18 then not by 9; (iii) if two numbers are not divisible by 6 then their sum is not; (iv) sum of a multiple of 6 and a multiple of 9 is a multiple of 3; (v) sum of a multiple of 6 and a multiple of 3 is a multiple of 9.
Answer: (i) Sometimes (ii) Sometimes (iii) Sometimes (iv) Always (v) Sometimes.
Full step-by-step NCERT solution with diagrams on Something by Zero.