Maths
Maths Puzzle
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the age of father is three times more than his son, if after three year the age of father will be ten time more than his son than what is the age of son at present
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Maths Other Question
In a plane there are n lines, no two lines of which are parallel and no three of which are concurrent. how many triangles can be formed with their points of interaction as vertices ?
[m=nc2]
1) mc2 - n*nc3
2) mc3 - n*(n-1)c2
3) mc3 - n*(n-1)c3
4) mc2 - (n-1)*nc2
in a group of cows and ducks the number of legs are 24 more than twice the heads. what is the number of cows? what is the answer of the question?