The average of 21 numbers is 44. Average of the first 11 of them is 48 and that of the last 11 is 41. Find the 11th number?  Choices:	A) 48	B) 51	C) 47	D) 49	E) 55
Sum of all the 21 numbers = 21 * 44= 
<gadget id="calculator">21 * 44</gadget>
<output>924</output>
924
Sum of the first 11 of them= 11 * 48= 
<gadget id="calculator">11 * 48</gadget>
<output>528</output>
528
Sum of the last 11 of them= 11 * 41= 
<gadget id="calculator">11 * 41</gadget>
<output>451</output>
451
So, the 11th number= 528 + 451 - 924= 
<gadget id="calculator">528 + 451 - 924</gadget>
<output>55</output>
55.
Answer: 55
<result>E</result>
The average of 21 numbers is 44. Average of the first 11 of them is 48 and that of the last 11 is 41. Find the 11th number?