If you're having trouble viewing this email, see the Question of the Day and Tip of the Day on the Web. 28-Jan-13 TestFunda Home | Sign up for Newsletters | Feedback CAT Question of the Day If f ( n ) is the number of solution sets ( x , y ) for the equation x + 2 y = n , such that x , y and n are all whole numbers, what is the value of the expression X = f (870) − f (868)? OPTIONS 1) −2 2) −1 3) 0 4) 1 5) 2 discuss | yesterday's solution | more questions Tip of the Day Your answer to the first question – 'Tell us something about yourself' will set the tone, pace and direction of the rest of the interview. It helps to be very clear about what you are planning to speak for that question. more tips Last year's Question of the day (27-Jan-12) If a , x , y , z , b are in AP; x + y + z = 15 and if a , x , y , z , b are in H.P. with ( x ) −1 ...