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# BANKING EXAM PREPARATION – CUBE AND CUBE ROOT

BANKING EXAM PREPARATION – CUBE AND CUBE ROOT Memorize the following Cubes-

 Number Cube Number Cube Number Cube 1 1 5 125 9 729 2 8 6 216 10 1000 3 27 7 343 11 1331 4 64 8 512 12 1728

PREPARATION – CUBE AND CUBE ROOT

Unit Digit Method-

Take unit digit of Number after this you can easily find unit digit of Answer. Among option you can select answer with same unit digit.

Unit Digit of Number                                      Unit Digit of Cube

1                                                                          1

4                                                                          4

5                                                                           5

6                                                                           6

9                                                                           9

0                                                                           0

2                                                                          8

8                                                                          2

3                                                                          7

7                                                                          3

BANKING EXAM PREPARATION – CUBE AND CUBE ROOT

Group Method- We takes a number – 328509 We need to find CUBE ROOT

1. Divide number into the group of 3 digits from Right g. 328, 509
2. From unit digit of first right group we can find unit digit of answer. Example first group is 509. The unit digit of cube is 9 than unit digit of cube root is also 9.
3. Now we will take next group and from this we can find first digit of answer. We select smaller number. Example Second group is 328. We know 73 = 343 and 63 = 216. We also know that 328 is between them. We select smaller means 6.
4. Arrange digit in sequence e.g. 69 means answer is 69.

PREPARATION – CUBE AND CUBE ROOT

Use Estimate and check answer. You need to practice as much as you can.

For Banking Exam preparation continues reading my blog on CAKART.

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