Select the odd group of numbers. (NOTE: Operations should be 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 1 and 3 is not allowed)
1
(16 – 20 – 24)
2
(23 – 27 –31)
3
(11 – 15 – 19)
4
(12 – 14 – 18)
5
none of above