what is the probability for a family with 3 children to have a girl and two boys ( assuming the probability of having a boy or a girl is equal )?	Pick one:	A) 1 / 8	B) 1 / 4	C) 1 / 2	D) 3 / 8	E) 5 / 8
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) ** 3</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/8) * 2</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/4) / 2</gadget>
<output>3/8 = around 0.375</output>

<result>D</result>
what is the probability for a family with 3 children to have a girl and two boys ( assuming the probability of having a boy or a girl is equal )?
divide(subtract(const_1, multiply(power(divide(const_1, const_2), 3), const_2)), const_2)
one possible case is : girl - boy - boy the probability of this is 1 / 2 * 1 / 2 * 1 / 2 = 1 / 8 there are 3 c 2 = 3 such cases so we should multiply by 3 . p ( one girl and two boys ) = 3 / 8 the answer is d .