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secondary 2 | Maths
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Date Posted: 2 years ago
Views: 619
question 1.
there are only 9 positive integer perfect cubes less than 1000, and they are ...
1^3 = 1
2^3 = 8
3^3 = 27
....
9^3 = 729.
of the 9 perfect cubes, only 2^3, 4^3, 6^3 and 8^3 are multiples of 4.
answer : A
question 2.
100000^2 - 99999^2 = 199999
1+9+9+9+9+9 = 46
answer : E
there are only 9 positive integer perfect cubes less than 1000, and they are ...
1^3 = 1
2^3 = 8
3^3 = 27
....
9^3 = 729.
of the 9 perfect cubes, only 2^3, 4^3, 6^3 and 8^3 are multiples of 4.
answer : A
question 2.
100000^2 - 99999^2 = 199999
1+9+9+9+9+9 = 46
answer : E
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