Q. 1

Evaluate the following and write which number is the cube of which other number.

(1) 33 (2) 73

(3) 43 (4) 93

(5) 113 (6) 153

Answer :

(1) The cube of 3 can be written as follows:


3 × 3 × 3


9 × 3


= 27


Hence 33 = 27.


(2) The cube of 7 can be written as follows:


7 × 7 × 7


49 × 7


= 343


Hence 73 = 343.


(3) The cube of 4 can be written as follows:


4 × 4 × 4


16 × 4


= 64


Hence 43 = 64.


(4) The cube of 9 can be written as follows:


9 × 9 × 9


81 × 9


= 729


Hence 93 = 729.


(5) The cube of 11 can be written as follows:


11 × 11 × 11


121 × 11


= 1331


Hence 113 = 1331.


(6) The cube of 15 can be written as follows:


15 × 15 × 15


225 × 15


= 3375


Hence 153 = 3375.


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