Question

1.1 x 1.1x1.1 +2.2 x 2.2 x 2.2 + 7.7 x 7.7 x 7.7 +3 x 1.1 x 1.1 x 2.2 + 3 x 1.1 x 2.2 x 2.2 +3 x 2.2 x 2.2 X x 7.7 + 3 x 2.2 x 7.7 x 7.7 + 3 x 7.7 x 7.7 x 1.1 +3 x 1.1 x 1.1 x 7.7 + 6 x 1.1 x 2.2 x 7.7 =??
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Answer 1

Answer:

We have (a+b+c) ^3= a3+b3+c3+3a2b+3ab2+3b2c+3bc2+3c2a+3a2c+6abc

Hence solution is (1.1+2.2+7.7) ^3= 10^3=1000