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We will be solving interesting sets as a part of this series LRDI of the Day. I will be posting a video solution by the end of the day. You can keep a track of all the sets by clicking here: LRDI of the Day

#LRDIoftheDay #13

Table A below provides data about ages of children in a school. For the age given in the first column, the second column gives the number of children not exceeding the age. For example, first entry indicates that there are 9 children aged 4 years or less. Tables B and C provide data on the heights and weights respectively of the same group of children in a similar format. Assuming that an older child is always taller and weighs more than a younger child, answer the following questions. (If you think that any of the answers cannot be determined, put X as your answer)

1. What is the number of children of age 9 years of less whose height does not exceed 135 cm?

2. How many children of age more than 10 years are taller than 150 cm and do not weigh more than 48 kg?

3. Among the children older than 6 years but not exceeding 12 years, how many weigh more than 38 kg?

The solution:

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