Quantitative Aptitude - Arithmetic Ability Questions

The length of the diagonal of a square is 10 cm. What is area of this square?

The ratio of the number of marbles that Joyee and Minati had was 5 : 8 while the ratio of the number of marbles that Jacob and Minati had was 7 : 12. What is the ratio of the number of marbles that Joyee and Jacob had?

The sum of a fraction and 4 times its reciprocal is 13/3. What is the fraction?

In the following question, select the odd letters from the given alternatives.

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

If a + b + c = 9 and ab + bc + ca = 18, then what is the value of a3 + b3 + c3 – 3abc?

Due to increase of k% in the side, the area of a square increases by 69%. What is the value of k?

A sum fetched a total simple interest of Rs. 7728 at the rate of 7% per year in 8 years. What is the sum?