Advertisements
Advertisements
Question
Write true (T) or false (F) for the following statement:
If a2 ends in 9, then a3 ends in 7.
Advertisements
Solution
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.
RELATED QUESTIONS
Find the smallest number by which of the following number must be divided to obtain a perfect cube.
128
Find the cubes of the number 40 .
Write the cubes of 5 natural numbers of which are multiples of 7 and verify the following:
'The cube of a multiple of 7 is a multiple of 73'.
Which of the following are cubes of odd natural numbers?
125, 343, 1728, 4096, 32768, 6859
What is the smallest number by which the following number must be multiplied, so that the products is perfect cube?
7803
Find the smallest number which when multiplied with 3600 will make the product a perfect cube. Further, find the cube root of the product.
Find if the following number is a perfect cube.
1938
Find the cube-root of -216
Find the cube-root of 250.047
Find two smallest perfect square numbers which when multiplied together gives a perfect cube number
