exam Maths Puzzle Numerical Ability

Six coins are tossed; in how many ways can you have: at least two heads?

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exam Other Question

a)Write the general quadratic equation._________________
b) the Quotient Rule for Square Roots stares:_____________________
c)circle the correct answer: simplifying a radical pro graph f(x)= -x-2 do I first go like (0,-2) and (-2,0) then graph