Quantitative Aptitude - Arithmetic Ability Questions

If (x – 2)2 + (y + 3)2 + (z – 15)2 = 0, then what is the value of x + y + z – 5?

√[(1 ­ sinA)/(1 + sinA)] is equal to?

If [a + (1/a)]2 – 2[a – (1/a)] = 12, then which of the following is a value of 'a'?

What is the simplified value of 18 - 12 ?

Akash's monthly income is Rs. 9600. His monthly expenditure is 60% of his income. What is his saving per month?

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

A factory buys 10 machines. 1 Machine­A, 4 Machine­B and rest Machine­C. Prices of the machines are Rs 90000, Rs 40000 and Rs 40000 respectively. Calculate the average cost of these machines?

a, b and c are 3 values, such that a + b = 5, b + c = 7.5 and c + a = 8.5. What will be the average of these values?