Answer for 18th question is (b) : X+Y+Z means X is younger than Y and
Y
is younger than Z. This can also be written as Z-Y-X.
Answer for 19th question is (a) : Farha-Fardina-Arif means Fardina is
younger than
Farha and Arif is younger than Fardina. This means that Arif is
younger than Farha.
So, Arif cannot be the father of Farha.

Answer for 20th question is (d) : Deven-Shashi*Hemant means Shashi is
younger than
Deven ans Shashi and Hemant are of the same age. Thus Deven is the
oldest. Now, the
opposite statements would mean : Deven is the youngest.

(1)Hemant+Shashi+Deven means Hemant is younger than Shashi, who is
younger than Deven.
So, Deven is the oldest.

(2)Hemant-Shashi+Deven means Shashi is younger than both Hemant and
Deven.
Thus eother Hemant or Deven is the oldest, but Deven is not the
youngest.

(3)Shashi*Hemant+Deven means Shashi and Hemant are of the same age
and Hemant is
younger than Deven. So, Deven is the oldest.

Odd man out series

Odd Man out Series

In this oddman out section we need choose the word or
pair thatdifferent from remaining words or pairs.
For Example:
1.a, apple b, mango c, watermelon d, guava
Explanation:
Here expect ‘ C’ all of other are grow on trees. So
watermelonis the the odd man here.

Exercise:

1. a.irran:asia b.candera:Australia
   c.norway:europe d.algeria:aferica

Ans: (b)
explanation:
In all other pairs ,second is continent to which the
country denotedby the first belongs.