Quantitative Aptitude - Arithmetic Ability Questions

Convert decimal 99 to binary.

In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

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

If 9x = 24311, then what is the value of x?

If the sum of a number and its reciprocal be 2, then the number is

If the difference between the roots of the equation Ax2 – Bx + C = 0 is 4, then which of the following is TRUE?

Two pipes P and Q can fill an empty tank in 25 hours and 20 hours respectively. Pipe R alone can empty the completely filled tank in 50 hours. Firstly both the pipes P and Q are opened and after 8 hours pipe R is also opened. What will be the total time (in hours) taken to completely fill the tank?

Simple interest on a sum for 10 years is equal to 5% of the principal. In how many years interest will be equal to the principal?