How many triangles in the figure?

which are the numbers that make their presence felt in only one of the geometric figures?

Find the missing character.

In a certain code language ‘PROTOCOL’ is written as ‘6’ then how will ‘NASDAQ’ be written in that code language?

Rohan's school bus face was in North when it reached in school. After started from bus stand it was turn two times to the right, one time in left and then reached at school. In which direction was the face of bus when it was on bus - stand. 

Denigrate: Devalue:: Upgrade : ? 

Five birds are sitting on a tree. The Pigeon is to the right of the Parrot. The Sparrow is above the Parrot. The Crow is next to the Pigeon. The Crane is below the Crow. Which bird is at the centre?