Aptitude and Reasoning Questions

If a-1a=1, then a2 + 1a2 ?

In the question, a word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as in two matrices given below. The columns and rows of Matrix I are numbered from 0 to 4 and that of Matrix II are numbered from 5 to 9. A letter from these matrices can be represented first by its row and next by its column, e.g., 'C' can be represented by 21, 43, etc. and 'U' can be represented by 75, 98 etc. You have to identify the set for the word 'ROAD'.

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

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

In the question a statement is given, followed by two arguments, I and II. You have to consider the statement to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given arguments, if any, is a strong argument.

Statement : Should rock shows be allowed to run till midnight at tourist places?

Argument I : Yes, more tourists arrive due to rock shows. Tourism is good for local economy.
Argument II : No, local traditions are harmed due to tourism.

In a certain code language, “FRANK” is written as “GQBML”. How is “MARCO” written in that code language?

The arithmetic mean of the marks scored by students of a class is 58. 20% of them secured a mean score of 60. The mean score of another 30% of the students was 40. The mean score of the remaining students is

Find the mean proportional between 2 and 98?