Q.1. The letters J, K, L, M, N, O and Z, represent seven consecutive integers from 42 to 53; not necessarily in that order, O is as much less than K as L is greater than M. Z is greater than O. K is the middle term. J is 3 greater than M. Can you find the sequence of letters from the lowest value to the highest value?
From (3), K is the middle term.
___ ___ ___ _K_ ___ ___ ___
From (4), there must be exactly 2 numbers between J and M which gives two possible positions.
[1] ___ _M_ ___ _K_ _J_ ___ ___
[2] ___ ___ _M_ _K_ ___ _J_ ___
From (1), the number of letters between O and K must be same as the number of letters between M and L. Also, the number of letters between them can be 1, 2 or 3. Using trial and error, it can be found that there must be 2 letters between them. Also, it is possible only in option [2] above.
[2] ___ _O_ _M_ _K_ _L_ _J_ ___
From (2) Z must be the highest and the remaining N must be the lowest number.
_N_ _O_ _M_ _K_ _L_ _J_ _Z_
Thus, the sequence of letters from the lowest value to the highest value is NOMKLJZ.
hence the answer is N