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Maths Puzzle
Numerical Ability
Find s if the line joining (2,6) to (s+4,s) is parallel to the line joining (5,3) and (-2,0).
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A truck carries a load of 85 boxes; some are 30 lbs and the rest are 25 lbs. If there are 3 times as many 30 lb boxes as 25 lb boxes, and the total weight of the boxes is 2245 lb,
If A={x|x is an odd integer} and B={39, 41, 42, 44}, list the elements of A ⋂ B.