Correct Answer - Option 2 : 260
Given
Number of visitors on Sunday = 560
Number of visitors on Monday = 210
The average number of visitors from Tuesday to Saturday = 210
Formula used
Average = (sum of all observation)/Number of observation
Calculation
Number of visitors from Tuesday to Saturday = 210 × 5
⇒1050
Average number of visitors in a week = (560 + 210 + 1050)/7
⇒1820/7
⇒260
∴ 260 is the average number of visitors on a week.