Quantitative Aptitude - Arithmetic Ability Questions

Product of digits of a 2-digit number is 18. If we add 63 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.

The 7th and 12th term of an arithmetic progression are -15 and 5 respectively. What is the 16th term?

What is the sum of the measures of all the interior angles of a regular polygon of 9 sides?

If FRIEND is coded as HUMJTK, how can CANDLE be written in that code?

The length of the radius of a circle with centre O is 5 cm and the length of the chord AB is 8 cm. The distance of the chord AB from the point O is

What is the slope of the line perpendicular to the line passing through the points (­-4,5) and (3,­-2)?

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?

The sum of two fractions is 3/4. One of them is 2/3. What is the other fraction?