In a certain code language, 'DUCK' is written as 'FSEI' and ‘FISH’ is written as ‘HGUF’. How will 'FROG' be written in that language?

Select the option that is related to the sixth word in the same way as the first word is related to the second word and the third word is related to the fourth word.

Speech : Dumb :: Sight : Blind :: ? : Deaf

In a certain code language, 'EARTH' is written as '5118208' and 'BOOK' is written as '2151511'. How will 'COUNTRY' be written in that language? 

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

In a certain code, 'MTOF' is written as 'NUPG' and 'EBUF' is written as 'FCVG'. How will be 'AITF' be written in that code?

Direction :Study the following information carefully and answer the questions given below:
Ten persons L, M, N, O, P , Q, R, S, T, and U were born on two different dates 15 and 30 of five different months viz. January, March, April, September and November but not necessarily in the same order. L was born on 15th of the month which has 31 days. Three persons were born between L and P. Four persons were born between P and O. O was born before L. The number of persons were born after O is same as the number of persons born before N. One person was born between P and R. M was born before T but not in the month of January. T was born before P. U was born before S on same date.

Four of the following five are alike in a certain way and hence they form a group. Which one of the following does not belong to that group?

Direction: Answer the questions given below referring to the following arrangement.
2 L P 3 R * J @ C O 7 N I # 4 Q A B 6 $ M = D 5 K

What will come in the place of the question marks (?) in the following series based on the above arrangement?
P3R, @CO, I#4, B6$, ?

Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
 25 * 5 * 10 * 2 * 8 * 11