1.

Find the cube of 104.1. 11547842. 11688943. 12346644. 11248645. None of these.

Answer» Correct Answer - Option 4 : 1124864

Concept used:-

Cube of a number near to base of hundred or tens.

Method and Calculation:-

 • Represent the cube as addition or subtraction from base of hundred or ten.

1043 = (100 + 4)3

 • Use identity (a + b)3 = a3 + b3 + 3ab (a + b)

(100 + 2)3 = 1003 + 43 + 3 × 100 × 4 (100 + 4)

 (100 + 4)3 = 1000000 + 64 + 1200 × 104 = 1000064 + 124800 = 1124864



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