Three of the following four number-pairs are alike in a certain way and one is different. Find the odd one out.

Which number come at the Question mark(?)
6 : 48 : 8 : ?

Find the odd word from the following:

If 1 is added to each even digit and 2 is subtracted from each prime digit in the number 73384563, then what is the sum of digits which is 4th and 6th from left and right respectively?

Find the odd number in the following?

Find the odd word/letters/numbers from the given alternatives. 

In the following figure, rectangle represents Plumbers, circle represents Athletes, Triangle represents Gamers and Square represents Cricketers. Which set of letters represents those who are Athletes as well as Cricketers?

5 people participated in a race. Karthik finished the race just behind Prabhjot. Faraz completed the race just before the Lakshya. Anil completed the race just before Faraz. Anil came in third place. Which of the following finished second in the race?