Six persons are arranged in descending order of their weights from left to right. Only T is lighter than Q, whose weight is 17 kg 17 \text{ kg} 17 kg ...
Question
Six persons are arranged in descending order of their weights from left to right. Only T is lighter than Q, whose weight is . S is twice as heavy as Q and is lighter than N. There are two persons between M and S. R is not the second heaviest among all.
How many persons are lighter than S?