a student committee on academic integrity has 56 ways to select a president and vice president from a group of candidates. the same person can not be both president and vice president. how many candidates are there?  Choose the correct choice from the following choices.
A) 7	B) 8	C) 9	D) 10	E) 11
<gadget id="calculator">4 * 56</gadget>
<output>224</output>

<gadget id="calculator">-1</gadget>
<output>-1</output>

<gadget id="calculator">(-1) ** 2</gadget>
<output>1</output>

<gadget id="calculator">224 + 1</gadget>
<output>225</output>

<gadget id="calculator">225 ** (1/2)</gadget>
<output>15</output>

<gadget id="calculator">1 + 15</gadget>
<output>16</output>

<gadget id="calculator">16 / 2</gadget>
<output>8</output>

<result>B</result>
a student committee on academic integrity has 56 ways to select a president and vice president from a group of candidates. the same person can not be both president and vice president. how many candidates are there?
divide(add(const_1, sqrt(add(multiply(const_4, 56), power(negate(const_1), const_2)))), const_2)
xc 1 * ( x - 1 ) c 1 = 56 x ^ 2 - x - 56 = 0 ( x - 8 ) ( x + 7 ) = 0 x = 8 , - 7 - 7 ca n ' t possible . hence 8 should be the answer b