Find the odd one in the following

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)

Find the odd word/ letters/ number/number pair from the given alternatives.

Find the odd word in the following options.

Select the related word / letters / number from the given alternatives.

In each of the following questions, certain pairs of words are given, out of which the words in all pairs except one, bear a certain common relationship. Choose the pair in which the words are differently related?

Three of the following four letter-clusters are alike in a certain way and one is different. Pick the odd one out.

Choose the related word/letters/number from the given alternatives.
 AF : BE : : ? : DH