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Question At what number is ‘idli-vada’ said for the 10th time?
To determine the 10th occurrence of “idli- vada”; we need to identify the numbers that are multiples of both 3 and 5.
The numbers for which “idli-vada” is said are the multiples of 15.
This sequence is: 15,30,45,60, 75,90, 105, 120,135,150,…
Thus, the 10th number for which players should say “idli-vada” is 150.