answersLogoWhite

0


Best Answer

Power 2: units digit 9. Multiply by 49 again to get power 4: units digit 1. So every 4th power gives units digit 1. So 16th power has units digit 1, so the previous power, the 15th must have units digit 3.

User Avatar

Wiki User

โˆ™ 2012-07-21 23:45:54
This answer is:
User Avatar
Study guides

Algebra

20 cards

A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

โžก๏ธ
See all cards
3.8
โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…
1984 Reviews

Add your answer:

Earn +20 pts
Q: What is the units digit of 7 to the 15 power?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is the units digit of 7 to the 34 power?

1


What is the units digit of 3 to the 84th power?

7


What is the units digit of 7157?

The digit in the units column of the number 7157 is 7.


What is the unit digit of 3 to the 60 power?

3 to a power divisible by 4 will have a units digit of 1.The powers of 3 are 3, 9, 27, 81 ... obviously, the next one will have a units digit of 1x3 or 3, the next one will have a units digit of 3x3 or 9, the next one will have a units digit of 7 (because 9x3 is 27), the next one will have a units digit of 1 (because 7x3 is 21), and then the cycle starts over with a units digit of 3 again.


What is the ones digit in the number 32047?

It is the digit 7 that is in the ones or units place


What is the value of the digit 7 in 28467.089?

Its positional place value is seven ones or units = 7


What is the units digit in 3 power 2011?

I guess you mean what's the units digit of 32011. It is 7. To work this out, see how the units digit of 3n changes; it goes: 3, 9, 7, 1, 3, 9, 7, 1, ... (only the first 8 powers are shown) repeating the same sequence of 4 digits. So if we find the remainder of 2011 divided by 4, it will tell us which of the four numbers (3, 9, 7, 1) will be the units digit of 32011: 2011 ÷ 4 ⇒ remainder 3, so the 3rd digit is the required digit: 7. (If there had been no remainder, then the 4th digit, namely 1, would have been the required value.)


What is the units digit of 3747?

7 (the second one).


What is the meaning of 7 in 27?

It's the ones digit, meaning there is 20 units, plus an additional 7 units, as told by the 7 in 27.


What does the digit 7 represent in 167.38?

It represents 7 units.


How can you tell what the ones digit of the product of 38 multipled by7will be without solving the whole problem?

Find the units digit of 8*7. The 30 in 38 will have no effect on the units digit.


Write a number which has units digit 6 tens digit 7 and tenths 5?

75758585940

People also asked