Question

Easiest way to find a Six Digit Cube Root. (I'm not joking)

Don't Ignore It Will help you in all The competitive Exams like, NDA and all.

Try it yourself.

1) First learn all the cubes from 1 to 10.
1³ ↔ 1
2³ ↔ 8
3³ ↔ 27
4³ ↔ 64
5³ ↔ 125
6³ ↔ 216
7³ ↔ 343
8³ ↔ 512
9³ ↔ 729
10³ ↔ 1000

2) Now, learn the last Digit of every Cubic Number.

1↔1
2↔8
3↔7
4↔4
5↔5
6↔6
7↔3
8↔2
9↔9
Let all be --------(i)

3) Now You are ready to go,

Take for example :-
314432 is the cubic number for some Two Digit number.
Now Make Two Pairs taking Three numbers in both the Pairs,
Here, 314 432.
Now check the last Digit of the Second Pair, Here, the Number is 2.
Remember from (i), 2↔8
So, the second Digit is 8.

To find First Digit, Just Find a cubic number which is smaller than the first pair. Here, 314, So, 6 cube (i.e 216) is smaller than 314.

So, first Digit is 6 and the Second Digit is 8. Hence 68 is the cube root of 314432.

So Like that You can Find any Six Digit Cube Root in Under a Minute.

Thank You!

Answer 1

thnx dude
it is quite helpful

Answer 2

yaa thnkss it is really helpful!!! :))
thnkss dude. :)