a 1 k. m. long wire is held by n poles. if one pole is removed, the length of the gap becomes 12 / 3 m. what is the number of poles initially?	Choose the most appropriate option:	A) 500	B) 501	C) 502	D) 503	E) 504
<gadget id="calculator">12 * 3</gadget>
<output>36</output>

<gadget id="calculator">36 * 12</gadget>
<output>432</output>

<gadget id="calculator">432 + 10</gadget>
<output>442</output>

<gadget id="calculator">10 * 4</gadget>
<output>40</output>

<gadget id="calculator">442 + 40</gadget>
<output>482</output>

<gadget id="calculator">482 + 10</gadget>
<output>492</output>

<gadget id="calculator">492 + 10</gadget>
<output>502</output>

<gadget id="calculator">502 - 1</gadget>
<output>501</output>

<result>B</result>
a 1 k. m. long wire is held by n poles. if one pole is removed, the length of the gap becomes 12 / 3 m. what is the number of poles initially?
subtract(add(add(add(add(multiply(multiply(12, 3), const_12), const_10), multiply(const_10, const_4)), const_10), const_10), 1)
length after removing pole is 12 / 3 = 4 then before removing pole is 2 ( ' coz | 2 | 2 | is | 4 | ) i . e . gap between two poles is 2 m 1 km = 1000 m then split 1000 m by 2 m = > we have 500 sections or gaps then no . of poles is 500 + 1 st pole = 501 poles therefore n = 501 . answer : b