Quantitative Aptitude - Arithmetic Ability Questions

Pick the odd one out from the following

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

The diagonals are congruent in a _____.

For real a, b and c if a2 + b2 + c2 = ab + bc + ca, then find the value of a+b+c2.

If n + n2 + n4 + n8 = 45, then find the value of 'n' which will satisfy the equation.

What is the largest 4 digit number that is exactly divisible by 93?

If the measure of the interior angle of a regular polygon is 120 deg then how many sides does it have?

What is the circumference (in cm) of a circle whose area is 616 sq cm?