Read the following statements carefully to answer these questions :
(i) X is older than L.
(ii) M and N are of equal age.
(iii) Z is the youngest.
(iv) Y is younger than N.
(v) Y is older than X.
Which statement(s) is/are not required to prove that L is younger than M?

Options

A. iii only
B. iii and iv
C. iv and v
D. iii and v

Answer

A

Explanation

According to the given information:
From (i), we get.
X `gt` L ….(vi)
From (ii), we get.
M=N ….(vii)
From (iii), we get,
Z `rArr` youngest... (viii)
From (iv), we get
N`gt` Y ….(ix)
From (v), we get
Y `gt` X ....(x)
Combining (i), (ii), (iv) & (v), we get
`M = N gt Y gt X gt L`.
So, `M gt L" or "L le M` ie L is younger than M.
Therefore, only statement `rArr` (iii) is not required.