How many integers from 101 to 900, inclusive, remains the value unchanged when the digits were reversed?
Choose the correct answer:
A) 50  B) 60  C) 70  D) 80  E) 90
question is asking for palindrome   first digit possibilities - 1 through 8 = 8   9 is not possible here because it would result in a number greater than 9 (i.e 909 , 919..)   second digit possibilities - 0 though 9 = 10   third digit is same as first digit   =&gt;total possible number meeting the given conditions = 8 *10= 
<gadget id="calculator">8 *10</gadget>
<output>80</output>
80   Answer is 80.
<result>D</result>
How many integers from 101 to 900, inclusive, remains the value unchanged when the digits were reversed?