exam Maths Puzzle Numerical Ability

Find the pattern of the following numbers and fill in the 3 question marks
1,3,7,3,11,13,13,19,19,55,?,
2,5,2,7,11,8,17,17,34,29,?,
3,1,5,9,5,13,15,21,23,21,?,

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exam Other Question

If each dimension of room is increased one meter, the area is increased by 51 meters; and if the length is increased one meter and the width diminished by one meter, the area is decreased three square meters. Find the dimensions of the room? FIND THE MIDPOINT OF THE SEGMENT HAVING THE GIVEN ENDPOINTS.
(-SQUARE ROOT 7, 1) AND (0,SQUARE ROOT 3)