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Maths Puzzle
Numerical Ability
In an election poll, 56% of 400 voters chose a certain canditate. Find the margin of sampling error.
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book Other Question
A woman and her grandson have the same birthday. For six consecutive birthdays,
she is an integral multiple of his age. How old is the grandmother at the sixth of these birthdays?
Can someone please help me solve this one. Thanks
Write a system of two equations in two unknowns for each problem. Solve each system by substitution.
47.) Different interes