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प्रश्न
Write true (T) or false (F) for the following statement:
If a2 ends in 9, then a3 ends in 7.
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उत्तर
False
a3 ends in 7 if a ends with 3.
But for every a2 ending in 9, it is not necessary that a is 3.
E.g., 49 is a square of 7 and cube of 7 is 343.
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संबंधित प्रश्न
Find the smallest number by which of the following number must be multiplied to obtain a perfect cube.
100
Which of the following is perfect cube?
3087
What is the smallest number by which the following number must be multiplied, so that the products is perfect cube?
1323
Which of the following number is not perfect cubes?
1728
By taking three different values of n verify the truth of the following statement:
If a natural number n is of the form 3p + 2 then n3 also a number of the same type.
Find the cube root of the following natural number 2744 .
Show that:
\[\frac{\sqrt[3]{- 512}}{\sqrt[3]{343}} = \sqrt[3]{\frac{- 512}{343}}\]
Making use of the cube root table, find the cube root
1346.
Find the cube-root of 343
Find the cube-root of 729.
