NTSE Stage 2 SAT 2017 Question Paper

Question : 54 of 100

Marks: +1, -0

Positive integers from 1 to 21 are arranged in 3 groups of 7 integers each, in some particular order. Then the highest possible mean of the medians of these 3 groups is-

16
12.5
11
14

Validate

Solution:

Possible pattern are
1, 2, 3, 18, 19, 20, 21
4, 5, 6, 14, 15, 16, 17
7, 8, 9, 10, 11, 12, 13
Medians of above pattern are 18, 14 and 10.
Hence, their mean

={18+14+10}/3=14

Go to Question:

Prev Question

Next Question