Question 74

State whether the following statement is true or false:

A number having 7 at its one's place will have 3 at the unit's place of its square.

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Solution

False
Square of 7 $= 7 \times 7 = 49$
Square of 17 $= 17 \times 17 = 289$
Square of 27 $= 27 \times 27 = 729$
and so on.

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Question 74

State whether the following statement is true or false:

A number having 7 at its one's place will have 3 at the unit's place of its square.

Question 75

State whether the following statement is true or false:

A number having 7 at its one's place will have 3 at the one's place of its cube.

If a number has zeroes at its unit and tens places then square of the number will have 3 zeroes at its end. State whether true or false.

Question 75

State whether the following statement is true or false:

A number having 7 at its one's place will have 3 at the one's place of its cube.

Question 49

State whether the following statement is true or false:

The square of 86 will have 6 at the unit's place.

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