for even numbers you can divide it by 8 until you get a odd number and take the cube root of that and multiply it by 2^(the number of times we divide 8) also what if the last digit is 5?
cause I tryed it for 18609625 and I got four options. So are you supposed to divide it by 125 until you get a 4,5,6 digit number and find the cube root of that and then multiply it by 5^(the number of times we divide 125
Wouldn't it be better to just teach a method to find the CR of ANY number? There is little utility in being able to find the cube toot of a number which you need to know is a perfect cube before you begin
Sir I do question the utility of being able to find the CR of a number you obtained by cubing the answer 1minute ago 😊😊😊😊😊 (You already know the answer). The talent cannot be used for anything real Next, just teach a method to find the CR of any number we might encounter
Trial #1 491 169 069 7 X 9 069 - 9cubed 069 - 729 Since it’s negative add 1000 to 069 So 1069-729 is 340 So 4 3(9square)x X = _4 3x81 xX = _4 So 2 is answer 3times1 is on left and only times 8 gets 24 ending 4. So final answer 789
Sir, to find the middle no. If the the unit digit is 5 then how can we get the exact value of x as every odd no. multiplying with 5 will give the unit digit as 5 so how can we get the exact no.?? For example - "31255875"
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Thanks heartedly. So clear concept.
for even numbers you can divide it by 8 until you get a odd number and take the cube root of that and multiply it by 2^(the number of times we divide 8) also what if the last digit is 5?
cause I tryed it for 18609625 and I got four options. So are you supposed to divide it by 125 until you get a 4,5,6 digit number and find the cube root of that and then multiply it by 5^(the number of times we divide 125
I have same doubt sir..
Using digit sum, we can find the correct ans...
@@sunilsheeba2010 it is no harder to find the CR of one number than it is to find the CR of another number
11:03, who like Suresh Aggarwal?
sir how is the value of cube root of square of 8 and square root of cube of 8 same which is said to be 4
Sir,for even numbers, you can use the digit sum method..
Superb sir
Sir what about if we get the answer five??? All the numbers have 5 at the unit place in 5 table
Agrawal sir jindabad
In case of two or more possibilities, we can go for digital sum.
Sir, why you did subtract 343 from 863? Plz tell me, What is the reason behind this?
that is the cube of the last digit
Can you do for 4rth root of 8 digit number
This man is super
Sir, can you please give a method of how to find square root of 8 digit number ?
He told you it's 8 and 9
Wouldn't it be better to just teach a method to find the CR of ANY number?
There is little utility in being able to find the cube toot of a number which you need to know is a perfect cube before you begin
Sir how to do cube root of (12167000)
I know easily 2_0
Middle number
000-0cube = 000
3(0)square X = 000
How to find X
Get zero but it’s not answer
The c/r of 12167 is readily seen as 23. Just add one zero, as they are one digit per set of 3 and no need to calculate a set of zeroes
Sir I do question the utility of being able to find the CR of a number you obtained by cubing the answer 1minute ago
😊😊😊😊😊
(You already know the answer).
The talent cannot be used for anything real
Next, just teach a method to find the CR of any number we might encounter
Using this method how to find the cube of 491169069?
yes
Trial #1
491 169 069
7 X 9
069 - 9cubed
069 - 729
Since it’s negative add 1000 to 069
So 1069-729 is 340
So 4
3(9square)x X = _4
3x81 xX = _4
So 2 is answer
3times1 is on left and only times 8 gets 24 ending 4.
So final answer 789
@@rayuduaddagarla3857 thank you Brother
Some time contradict answer
561515625ka karke dikhaiy
825
second comment sir
Sir, to find the middle no. If the the unit digit is 5 then how can we get the exact value of x as every odd no. multiplying with 5 will give the unit digit as 5 so how can we get the exact no.?? For example - "31255875"