Select the odd group of numbers. (NOTE: Operations should ne performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 - Operations on 13 such as adding/Subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on q and 3 is not allowed)

( 400 - 80 - 14 )

The logic followed here is

The logic followed here is :

Ist number ÷ 5  = second number and second number ÷ 5  = IIIrd number

As

600 ÷ 5 = 120 and 120 ÷ 5  = 24

400 ÷ 5  = 80 and 80 ÷ 5 = 16 but 40 is given (ODD)

300 ÷ 5  = 60 and 60 ÷ 5  = 12

500 ÷ 5  = 100 and 100 ÷ 5 = 20