Quantitative Aptitude - Arithmetic Ability Questions

Given: 6x + 2(6-x) > 2x -2 < 5x/2 - 3x/4; then x can take which of the following values?

If x2+y2+z2-8x+6y-4z+29 = 0, then find the value of z(x+y).

What is the value of ( 1/2 - cot45) ?

If 123 x 356 = 43788, then 1.23 x 0.356 = ?

What is the value of √2 Sec 45° + (1/√3)Tan 30°?

Simplify : -21973 × -1253 ÷ 275123

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

Product of digits of a 2-digit number is 18. If we add 63 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.