GRE
The length of chord $$RS$$
$$6$$
The speed of the car, in miles per hour
$$61$$ miles per hour
The probability that both events will occur
$$0.40$$
$$(-1)^{(k+n)}$$
$$(-1)^{(k^2+n)}$$
$$x$$
$$y$$
The length of arc $$MPN$$
$$\frac{7π}{3}$$
$$|x-y|$$
$$24$$
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