Find out the cube of 72?1. 3579112. 4389763. 3732484. 405224

1.	Find out the cube of 72?1. 3579112. 4389763. 3732484. 405224
Answer» Correct Answer - Option 3 : 373248 Given: The given number = 72 Concept: Calculation skills trick Calculation: Step(1): Write down the cube of each of the digits in three digit format i.e. 7³ = 343 and 2³ = 8 The number obtained after this step is 343008. Step(2): Now multiply all the digit of the given number with themselves i.e. (7 × 2) = 14 Step(3): Multiply the result obtained in Step(2) by the power 3 i.e. (14 × 3) = 42 Step(4): Now multiply the result obtained in Step(3) with the given number i.e. (72 × 42) = 3024 Step(5): Add the number obtained in Step(1) with the number obtained in Step(4) keeping the unit place empty i.e. 3 4 3 0 0 8 _ 3 0 2 4 _ 3 7 3 2 4 8 ∴ Cube of 72 = 373248

Answer» Correct Answer - Option 3 : 373248

Given:

The given number = 72

Concept:

Calculation skills trick

Calculation:

Step(1):

Write down the cube of each of the digits in three digit format i.e. 7³ = 343 and 2³ = 8

The number obtained after this step is 343008.

Step(2):

Now multiply all the digit of the given number with themselves i.e. (7 × 2) = 14

Step(3):

Multiply the result obtained in Step(2) by the power 3 i.e. (14 × 3) = 42

Step(4):

Now multiply the result obtained in Step(3) with the given number i.e. (72 × 42) = 3024

Step(5):

Add the number obtained in Step(1) with the number obtained in Step(4) keeping the unit place empty i.e.

3 4 3 0 0 8

_ 3 0 2 4 _

3 7 3 2 4 8

∴ Cube of 72 = 373248

Discussion

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