Question
If the sum of three numbers is zero, then which of the
options below will always be equal to the value of the sum of the cubes of those numbers?Solution
ATQ- a+b+c = 0 a3+b3+c3 =? Use of this formula- a3+b3+c3-3abc =(a+b+c) (a2+b2+c2-ab-bc-ca) a3+b3+c3-3abc= 0(a2+b2+c2-ab-bc-ca) a3+b3+c3-3abc=0 a3+b3+c3 =3abc
More Previous year papers Questions
- Which letter and number cluster will replace the question mark (?) to complete the given series?
LT6, KU12, IW24, FZ48, ____ - Which letter-cluster will replace the question mark (?) in the following series?
RGV, UME, ?, AYW, DEF - Which letter-cluster will replace the question mark (?) in the following series?
NPQR, OORQ, PNSP, ____, RLUN - A series is given with one term missing. Choose the correct alternatives from the given ones that will complete the series.
57, 59, 56, 61, 54, ___ - Select the number from among the given options that can replace the question mark (?) in the following series.
17, 18, 22, 31, 47, ___
