If p = 8.15, q = 9.06 and r = −17.21, then the value of p³+q³+r³-3pqr

Find the value of $$ (2 {1\over6}+1 {13\over18}-{1\over6}) × {16÷4}$$

Find the conjugate of (1 + i) ³ 

Direction : What should come in place of the question (?) in the following question.

$$ {\sqrt{441}}+ {(71)^{2}} -{(?)^{2}}=2707 $$

If $${b\over a}=0.7$$ find the value of $${a-b\over a+b}={11\over34}.$$

24% of 680 + 16 % of 525 – 22% of 450 =?

If $${32÷16-5×2\over 11÷22×8-5×2}={1\over p}$$then what is the value of P?

If the square root of 841 is 29, then square root of 0.00000841 is equal to: