The numbers 17.0145 and 21.0235 were rounded to three figures after the decimal point. The resulting numbers, respectively, are:

Solution & Explanation

Concept — Rounding when the digit to be dropped is exactly 5 (the "round half to even" / banker's rule used in NCERT): if the last dropped digit is 5 with nothing significant after it, leave the preceding digit unchanged if it is even, and increase it by one if it is odd. Number 1: 17.0145, rounded to three decimal places. The digit being dropped is 5; the digit just before it is 4, which is EVEN → it stays 4. Result = 17.014. Number 2: 21.0235, rounded to three decimal places. The digit being dropped is 5; the digit just before it is 3, which is ODD → it is raised to 4. Result = 21.024. So the two rounded numbers are 17.014 and 21.024 — option C. (Trap: ordinary "always round 5 up" would give 17.015 and 21.024, which is option D and is not the rule applied here.)