In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Problem: how many numbers from 19 to 79 are exactly divisible by 11 ? 
Options: a ) 5 , b ) 6 , c ) 9 , d ) 11 , e ) 12
b

Problem: how many odd 3 - digit integers greater than 800 are there such that all their digits are different ? 
Options: a ) 40 , b ) 56 , c ) 72 , d ) 81 , e ) 104
c

Problem: every year an amount increases by 1 / 8 th of itself . how much will it be after two years if its present value is rs . 62000 ? 
Options: a ) 81000 , b ) 78468.75 , c ) 81008 , d ) 81066 , e ) 81022

b