Aptitude Day 9

Answers of Day 8:     1. 6

                                    2. 6

                                    3. 4

                                    4. 4

Rules for the number 5 and 6

  

There is no cycle for 5 and 6.

For any power of 5, the unit digit is 5 and for any power of 6, the unit digit is 6. 

Example: Unit digit of the product of   5² * 5²⁰ *6⁷⁰ =?

  

Solution:  5*5= 25, 5*6=30. Hence the unit digit is 0.

Problems to solve

1.    6³*6¹⁰¹ *6⁷² =?

2.    5³⁹ * 5⁴⁵*5⁷⁶ =? 

3.    6²⁴ * 5³⁷ *  6⁷⁹ =?

4.    5⁹¹ * 5⁷⁹ *  6⁹² =?

5.    6¹⁰¹ * 6⁹⁹ *  6⁷⁹ =?

Check out the answers Aptitude Day 10