Quantitative Aptitude - Arithmetic Ability Questions

If x=2+3,then the value of x2-x+1x2+x+1 is

If x + 3y - 2z4 = 6, x + 232y + 3z = 33 and 17x + y +z + 2z =9, then what is the value of 46x+ 131y ?

Simplify (b2x 3a2z4 ) × (b2x 4a4z3 )/(a3b2z4 )

If Cot θ = 21/20, then what is the value of Cosec θ?

For triangle PQR, find equation of altitude PS if co­-ordinates of P, Q and R are (6,2), (0,3) and (­-4,5) respectively?

If 3√2 + √18 + √50 = 15.55, then what is the value of √32 + √72?

If 493/29 = 17, then 4.93/0.0017 = ?

The compound interest earned in two years at 12% per annum is Rs 10176. What is the sum (in Rs) invested?