Question

2. Find the cube root of the following numbers by finding their ones and tens digit.
a) 4096
b) 8000
c) 12167
d) 15625
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Answer 1

$\huge{\mathfrak{\underline{\red{Answer!}}}}$

(a) 729 : The units digit of 729 is 9 .Therefore the units digit of its cube root is 9 sicne no number is left after striking out units tens and hundred digits of the number the required cube root is 9 .Therefore the units digit of its cube root is 9 since no number is left after stiking out the units tens and hundreds digits of the number the required cube root is 9 <br> (b) 2744: Here the units digit is 4 Therefore the units digit of the cube root is 4 after striking the last three digits from the right we are left with the numebr 2 Now

and

.Therefore the tens digit is 1 <br> Thus the required cube root is 14 <br> (c ) 42875: Here the units digit is 5 .Therefore the units digit of the cube root is 5 After striking the last three digits from the right we are left with the number 42 .Now

and

Therefore the tens digit is 3 <br> Thus the required cube root is 35

Answer 2

Answer:

1. 16
2. 20
3. 23
4. 25

Step-by-step explanation:

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