exam Maths Puzzle Numerical Ability

Write the equation of the line, passes through (6,1) and is parallel to 4y-2x-1=0

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exam Other Question

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-10(2a - 6b) when grandpa was over fifty but less than eighty, he told a friend, "each of my sons has as many sons as brothers, and the number of my years is exactly that of the number of all my sons and grandsons." how many sons and grandsons does grandpa have?