Question

970299 z cobe root of what and how

Answer 1

\[(99)^3\]

Answer 2

how zaisha

Answer 3

(99)^3=970299 .. type that on a calculate and see or else multiply 99*99*99

Answer 4

\[99*99*99=970299\]

Answer 5

but in competative exmz calculators r nt allowed na

Answer 6

so just multiply 99*99*99 ..then you will get the answer

Answer 7

there z very less tym to ans nd how could i knw itz 99 yhen multiply

Answer 8

there is a trick to follow..

First, memorize the cubes of the digits 1 through 9:

1, 8, 27, 64, 125, 216, 343, 512, 729.

Answer 9

Next memorize the "endings" of the cubes. For example, the ending of 93 is 9, because 93 = 729. The "ending" (or last digit) is 9.

Answer 10

So let's make a list. "1 cubed ends in 1" is abbreviated "1 --> 1".

1 --> 1
2 --> 8
3 --> 7
4 --> 4
5 --> 5
6 --> 6
7 --> 3
8 --> 2
9 --> 9

Answer 11

Now how to do the trick!
Tell a friend to secretly pick any two-digit number and then have him or her use a calculator to cube it. Let's say he picks 76. So using the calculator he computes 76 x 76 x 76 . He then tells you the cube: 438,976.

To instantly determine his original number (ie, compute the cube root), follow these easy steps:
Drop the last three digits and find the largest cube contained in 438. This is 73 = 343, so the tens-digit is 7.
(This is why you had to memorize the cubes of the digits 1 through 9)
Now go back to the last three digits. Look at the last digit, 6. That's the same ending as 63, so your units-digit is 6.
(This is why you had to memorize the "endings" of the cubes for digits 1 through 9)
So the cube root of 438,976 is 76

Answer 12

thnaxxx so much dear zaisha

Answer 13

no problem