# Aptitude & Logical Reasoning Quiz -18 #### A father said to his son, "I was as old as you are at the present at the time of your birth". If the father's age is 38 years now, what was the son's age five years back?

Explanation:
Let son's present age be x years. Then,
(38−x)=x
⇒2x=38
⇒x=38/2=19
Son's age 5 years back =19−5=14

#### The average of five numbers is 27. If one number is excluded, the average becomes 25. What is the excluded number?

Explanation:
Sum of 5 numbers = 5 × 27
Sum of 4 numbers after excluding one number = 4 × 25
Excluded number
= 5 × 27 - 4 × 25
= 135 - 100 = 35

#### Pointing to a photograph. Bajpai said, "He is the son of the only daughter of the father of my brother." How Bajpai is related to the man in the photograph?

Explanation:
The man in the photo is the son of the sister of Bajpai. Hence, Bajpai is the maternal uncle of the man in the photograph.

#### 6, 13, 25, 51, 101, ?

Explanation:
The pattern is x 2 + 1, x 2 - 1, x 2 + 1, x 2 - 1,.....
So, missing term = 101 x 2 + 1 = 203.

#### If 1st October is Sunday, then 1st November will be

Explanation:
Given that 1st October is Sunday
Number of days in October = 31
31 days = 3 odd days
(As we can reduce multiples of 7 from odd days which will not change anything)
Hence 1st November = (Sunday + 3 odd days) = Wednesday