Aptitude and Reasoning Questions

In the following question, select the number which can be placed at the sign of ? from the given alternatives.

In a certain code, if GREAT is coded as JOEJK then ZEBRA is coded as

Average age of 5 students of a school is 14 years. The average age of students and their Mathematics and science teachers is 30 years. If the age of science teacher is 6 years more than the age of Mathematics teacher, then what is the age (in years) of Mathematics teacher?

Average marks obtained by 19 boys of a college is 56. If the highest marks and lowest marks obtained are removed, then the average reduces by 2. What is the average of the highest and lowest marks obtained?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

KHQ, HEN, EBK, ?, YVE

Akash leaves from his school at 5:30 a.m. He starts walking towards south and covers a distance of 20 km. He turns left and walks 15 km to reach point A. He turns right and walk 14 km. He again turns right and walks 10 km. How far (in km) and in which direction is he now from point A?

In the following question, two statements are given each followed by two conclusions I and II. You have to consider the statement to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.

Statement:
(I) Some children are adults.
(II) Some adults are old.

Conclusion:
(I) Some children are not old.
(II) Some adults are not old.

What is the effective discount (in %) on two successive discounts of 20% and 10%?