|
Number
|
cube
|
Last digit of cube
|
|
1
|
 = 1 |
1
|
|
2
|
 = 8 |
8
|
|
3
|
 = 27 |
7
|
|
4
|
 = 64 |
4
|
|
5
|
 = 125 |
5
|
|
6
|
 = 216 |
6
|
|
7
|
 =343 |
3
|
|
8
|
 =512 |
2
|
|
9
|
 = 729 |
9
|
|
10
|
 = 1000 |
0
|
Find the cube root of the following Number
Questions 1) ![\sqrt[3]{3375}](https://questionpaper.org/wp-content/plugins/latex/cache/tex_1086c755a60140267576883f70e6ca18.gif)
Solution:
Step 1: Fist we need to ignore last three digit . i.e 375
Step 2: Now from the above table, find cube of a number which is less than and nearest to 3 .That number is 1 so left part of answer is 1
Step 3: Since the last digit of '3375' is 5 .From the above table the last digit of 5 comes from the cube of 5 . It means right part of answer will 5.
Answer = 15
Questions 2) ![\sqrt[3]{79507}](https://questionpaper.org/wp-content/plugins/latex/cache/tex_44d2f96f85373c5d126a5bd541aa46ec.gif)
= ?
Solution:
Step 1: Fist we need to ignore last three digit . i.e 507
Step 2: Now from the above table, find cube of a number which is less than and nearest to 79 .That number is 4 so left part of answer is 4
Step 3: Since the last digit of '79507' is 7 .From the above table the last digit of 8 comes from the cube of 3 . It mean right part of answer will be 3
Answer = 43
Questions 3) ![\sqrt[3]{373248}](https://questionpaper.org/wp-content/plugins/latex/cache/tex_fea865ae8a6bd68be7e93ddf098a2868.gif)
= ?
Solution:
Step 1: Fist we need to ignore last three digit . i.e 248
Step 2: Now from the above table, find cube of a number which is less than and nearest to 373 .That number is 7 so left part of answer is 7
Step 3: Since the last digit of '373248' is 8 .From the above table the last digit of 8 comes from the cube of 2 . It mean right part of answer will be 2
Answer = 72
Questions 4) ![\sqrt[3]{438976}](https://questionpaper.org/wp-content/plugins/latex/cache/tex_0735dc3f1cfa99d50de32e2f2c0d0058.gif)
= ?
Solution:
Step 1: Fist we need to ignore last three digit . i.e 976
Step 2: Now from the above table, find cube of a number which is less than and nearest to 438 .That number is 7 so left part of answer is 7
Step 3: Since the last digit of '438976' is 6 .From the above table the last digit of 6 comes from the cube of 6 . It mean right part of answer will be 6
Answer = 76
Questions 5) ![\sqrt[3]{238328}](https://questionpaper.org/wp-content/plugins/latex/cache/tex_163116581de8da230097035b29d9d3c2.gif)
= ?
Solution:
Step 1: Fist we need to ignore last three digit . i.e 832328
Step 2: Now from the above table, find cube of a number which is less than and nearest to 238 .That number is 6 so left part of answer is 6
Step 3: Since the last digit of '238328' is 8 .From the above table the last digit of 8 comes from the cube of 2 . It mean right part of answer will be 2
Answer = 62
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