John is the son of Jacob.
So,
Jacob is the_____of John's father?

There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle. Where's the white house?

who is silent in the parliament?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

What has 13 hearts but no other organs?

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

It is an eleven letter word.
The first, second, third and fourth letters form a banquet's name.
The fifth, sixth and seventh letters form a car's name.
The eighth, ninth, tenth and eleventh letters form a mode of transport.

Can you identify what word it is?