Quantitative Aptitude - Arithmetic Ability Questions

The mean of a distribution is 18 and the standard deviation is 4.5. What is the value of the coefficient of variation?

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

The value of k, for which the quadratic equation 4x2 + 4√3x + k = 0 has equal roots is

The 3rd and 8th term of an arithmetic progression are -13 and 2 respectively. What is the 14th term?

The average weight of 25 bags is 55 kg. The weight of one bag was misread as 65 instead of 56. Find the correct mean value.

What will be the maximum power of 8 that exactly divides 25!?

In a cyclic quadrilateral ABCD , the side AB is extended to a point X. If ∠XBC = 82° and ∠ADB = 47° , then the value of ∠BDC is