4, 10 (..), 82, 244,730

In a certain code TASK is written as 6 and WITH is written as 6, then how can HAND be written in that code?

Which letter-cluster will replace the question mark (?) to complete the given series?

AYD, BVF, DRH, ?, KGL

Four options have been given out of which three are alike in some manner, while one is difference. Choose the odd one.

Find the missing number?

In a certain code language, 'GRAY' is coded as ‘718125', 'FOMK' is coded as ‘6151311'. How will 'CBHL' be coded in that code language? 

A tree increases annually by 1/8th of its height. By how much will it increase after 2 years, if it stands today 64cm high?

B has only two children. A is the mother of B. C is married to the only daughter of B. C is the only child of F. C is the brother in law of G. H is married to G. J is the mother in law of H.

If P is the daughter of B and Y is the wife of F then how F is related to P?