Final answer:
To round off 3,54,320 to the nearest lakh, we check the ten thousands place, and since it's less than 5, the number rounds down to 3,50,000.
Step-by-step explanation:
The question asks about rounding off a number, specifically 3,54,320, to the nearest lakh. Rounding off to the nearest lakh means looking at the ten thousands place to decide whether to round up or down. In this case, since the ten thousands digit is 4, which is less than 5, we do not round up the lakh's place. Thus, 3,54,320 rounded to the nearest lakh is 3,50,000.