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Question If the game is played for the numbers from 1 to 90, find out: (Medium)
(a) How many times would the children say ‘idli’ (including the times they say ‘idli-vada’)?
(b) How many times would the children say ‘vada’ (including the times they say ‘idli-vada’)?
(c) How many times would the children say ‘idli-vada’?
(a) 30 times would the children say ‘idli’ (including the times they say ‘idli-vada’) because, between 1 to 90, there are 30 numbers that are multiple of 3.
3, 6, 9, 12, 15, 18, 21,……..
(b) 18 times would the children say ‘vada’ (including the times they say ‘idli-vada’) because, between 1 to 90, there are 18 numbers which are multiple of 5.
5, 10, 15, 20, 25, 30,……….
(c) 6 times would the children say ‘idli-vada’.
15, 30, 45, 60, 75, 90.