Quantitative Aptitude - Arithmetic Ability Questions

What is the smplified value of Sin2A/1+Cos2A ?

If x/y = 4/9, then what is the value of (7x2 – 19xy + 11y2)/y2 ?

If a2+b2+c2=83and a+b+c=15 then the value of ab+bc+ca is

If a + b + c = 11 and ab + bc + ca = 17, then what is the value of a3 + b3 + c3 – 3abc?

What is the value of 34+122 ?

Find 150% of X, if X is the least number which when divided by 6, 7, 8, 9 and 12 leaves remainders 2, 3, 4, 5 and 8 respectively.

What is the LCM of 64 and 56?

In an army selection process, the ratio of selected to unselected candidates was 9:2. If 80 less had applied and 20 less selected, the ratio of selected to unselected would have been 5:1. How many candidates had applied for the process?