3, 7, 6, 5, 9, 3, 12, 1, 15, ?

3, 6, 18, 72, ?

24, 60, 120, 210, ?

Directions: In the following question four words have been given, out of which three are alike in some manner and the for one is different. Choose out the odd one.
Triangle
Rectangle
Circle
Square 

Direction: In the following question, select the related letters from the given alternatives.
Book : Pages : : Ladder : ?

Directions : In each of the questions below are given four statements followed by three conclusions numbered I, II, and III. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Statements:
1. Some cats are dogs.
2. Some tree are dogs.
Conclusions:
(I) Some dogs are cats.
(II) Some cats are trees.

The sequence of folding a piece of paper and the manner in which the folded paper has been cut in shown in the question figure. Select the figure from the answer figures that would most closely resemble the unfolded paper.

Find the number of triangles in the given figure.