Quantitative Aptitude - Arithmetic Ability Questions

Select the odd word/letters/number/number pair from the given alternatives.

If 1aa2+1 = 3, then the value of a6+1a3 is

In ΔABC, AC = BC and ∠ABC = 50°, the side BC is produced to D so that BC = CD then the value of ∠BAD is

If √(1 + cot2A)/cotA = x, then the value of x is

In an army selection process, the ratio of selected to unselected was 5:1. If 100 less had applied and 20 less selected, the ratio of selected to unselected would have been 6:1. How many candidates had applied for the process?

The curved surface area and the diameter of a right circular cylinder are 660 sq.cm and 21 cm respectively. Find its height (in cm).

The sum of a fraction and 3 times its reciprocal is 37/10. What is the fraction?

If the product of two numbers is 2522 and their LCM is 97 then their HCF is