On dividing 21 by a number, the quotient is 10 and the remainder is 1. Find the divisor. Choices
A) 1	B) 2	C) 4	D) 6	E) 7
d = (D-R)/Q   = (21 - 1)/10   = 20/10= 
<gadget id="calculator">20/10</gadget>
<output>2</output>
2   2
<result>B</result>
On dividing 21 by a number, the quotient is 10 and the remainder is 1. Find the divisor.