If p = 8.15, q = 9.06 and r = -17.21, then the value of $p^3 +q^3 +r^3 -3pqr $ is :
Answer & explanation
Correct answer: option 4
p = 8.15, q = 9.06 and r = -17.21
Here we can see p + q = r
8.15 + 9.06 -17.21 = 0
If a + b + c = 0 then
$p^3 +q^3 +r^3 -3pqr$ = 0 always.