Quantitative Aptitude - Arithmetic Ability Questions

Find the LCM of 0.63, 10.5, 2.1, 4.20

If (4a-3)2=0,then the value of 64a3+12a+13 is

If (x+1/x) = 5, then the value of 5xx2+5x+1?

The first and last terms of an arithmetic progression are 32 and ­-43. If the sum of the series is ­-88, then it has how many terms?

If x + (1/x) = 2, then what is the value of x64 + x121?

Solution A contains 10% acid and solution B contains 30% acid. In what ratio should solution A be mixed with Solution B to obtain a mixture with 25% acid?

If x+1x=5, then 6xx2+x+1 value is

If Rs. 10000 amounts to Rs. 11664 invested in compound interest(compounded annually) for two years then the annual rate of compound interest is