Find the total number of four digit numbers that can be formed using the digits 1,2,5,6.  Choices
A) 253	B) 256	C) 258	D) 260	E) 265
no. will be formed by taking all at a time with repititon allowed   total=4*4*4*4= 
<gadget id="calculator">4*4*4*4</gadget>
<output>256</output>
256   ANSWER:256
<result>B</result>
Find the total number of four digit numbers that can be formed using the digits 1,2,5,6.