Straight Lines ...

If coordinates of P,Q, and R are (3,6),(-1,3) and (2,-1) respectively. Then area of $$\displaystyle \triangle PQR$$ is ____ square units.

Area of a triangle whose vertices are (0, 0), (2, 3) , (5, 8) is _______ square units.

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In Hyderabad there are 5 routes to Begumpet from Kukatpally and 9 routes to Dilsukhnagar from Begumpet In how many ways can a person travel from Kukatpally to Dilsukhnagar via Begumpet?

Area of triangle whose vertices are $$(0, 0), (2, 3), (5, 8)$$ is ____ square units.

The area of a triangle with the vertices $$(1, 2), (3, 4)$$ and $$(5, 6)$$, is ____ square units.

In how many ways can 3 diamond cards be drawn simultaneously from a pack of cards?

Find the area of $$\Delta ABC$$, in which $$A = (2, 1), B = (3, 4)$$ and $$C = (-3, -2).$$

A researcher plans to identify each participant in a $$174$$ certain medical experiment with a code consisting of either a single letter or a pair of distinct letters written in alphabetical order. What is the least number of letters that can be used if there are $$12$$ participants,and each participant is to receive a different code?

In a certain language '$$ \displaystyle +\div ?   $$' means 'where are you' , '$$ \displaystyle @-\div    $$' means ' we are here' , and '$$ \displaystyle +@\times    $$' means ' you come here' What is the code for ' Where' ?