Quantitative Aptitude - Arithmetic Ability Questions

Coefficient of x2 in 6x3 + 4x2 + 2x + 3 is

What is the value of (1/2) Sec 30° + √2 Tan 60°?

Expanded and simplification of (x + 3)(x - 1) will be equal to

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

Find out the odd word/letters/number/number pair from the given alternatives.

The sum of the digits of a 2-digit number is 8. If we add 36 to the number, the new number obtained is a number formed by interchange of the digits. What is the number?

If a+1a2 = 3, then the value of a18+ a12+a6 + 1 is

In the following question, select the missing number from the given series.
 
1912, 2012, 2133, 2277, 2446, ?