ଯଦି p + q + r = 13 ଏବଂ pq + qr + rp = 30, ତେବେ p3 + q3 + r3 − 3pqr ର ମୂଲ୍ୟ ହେଉଛି:

1
1027
2
1125
3
1145
4
1216

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