The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) are followed in all the number pairs, EXCEPT one. Find that odd number pair.

In a certain code language, 'RAIN' is written as '182915' and 'SUN' is written as '192214'. How will 'MOON' be written in that language? 

Which letter cluster will replace the question mark (?) to complete the given series?
 ANGE, DSBB, GXWY, ?

Study the given pattern carefully and select the number that can replace the question mark (?) in it.
 First row: 73, 52, 75
 Second row:64, 41, 63
 Third row: 68, 47, ?

(NOTE: Operations should be performed on the whole numbers, without breaking down the number into its constituent digits. For example, 13 – Operations on 13 such as adding/deleting/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.)

Which of the following numbers will replace the question mark (?) in the given series?
 11, 20, 43, 94, 187, 336, 555, ? 

Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is related to the fifth number.
 10 : 0 :: 12 : ? :: 16 : 3 

Which of the following letter-clusters will replace the question mark (?) in the given series to make it logically complete?
 XUR, WTQ, VSP, URO, ? 

Select the option th at represents the correct order of the given words as they would appear in an English dictionary.
 1. Sourced
 2. Sorrow
 3. Soulful
 4. Soaking
 5. Somewhere