Advertisements
Advertisements
Question
Find the cube-root of -216 x 1728
Advertisements
Solution
-216 x 1728
| 2 | 216 |
| 2 | 108 |
| 2 | 54 |
| 3 | 27 |
| 3 | 9 |
| 3 | 3 |
| 1 |
| 2 | 1728 |
| 2 | 864 |
| 2 | 432 |
| 216 |
= -(2 x 2 x 2 x 3 x 3 x 3) x (2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3)
= -2 x 3 x 2 x 2 x 3
= -72
APPEARS IN
RELATED QUESTIONS
Find the smallest number by which the following number must be divided to obtain a perfect cube.
81
Find the cubes of the number 16 .
Write the cubes of 5 natural numbers which are multiples of 3 and verify the followings:
'The cube of a natural number which is a multiple of 3 is a multiple of 27'
What is the smallest number by which the following number must be multiplied, so that the products is perfect cube?
1323
What is the smallest number by which the following number must be multiplied, so that the products is perfect cube?
7803
What is the smallest number by which the following number must be multiplied, so that the products is perfect cube?
35721
By which smallest number must the following number be divided so that the quotient is a perfect cube?
675
By which smallest number must the following number be divided so that the quotient is a perfect cube?
8788
By which smallest number must the following number be divided so that the quotient is a perfect cube?
35721
For of the non-perfect cubes in Q. No. 20 find the smallest number by which it must be multiplied so that the product is a perfect cube.
Write true (T) or false (F) for the following statement:
If a2 ends in an even number of zeros, then a3 ends in an odd number of zeros.
Find the cube root of the following natural number 157464 .
Multiply 210125 by the smallest number so that the product is a perfect cube. Also, find out the cube root of the product.
Making use of the cube root table, find the cube root 70 .
Find if the following number is a perfect cube?
1331
Find the cube-root of -216
Find the cube-root of 2.744
Find the cube-root of - 15.625.
If a2 ends in 5, then a3 ends in 25.
There is no cube root of a negative integer.
