A community for students.
Here's the question you clicked on:
← 55 members online
 0 viewing
akhil009
 2 years ago
what is the unit digit of product.....
akhil009
 2 years ago
what is the unit digit of product.....

This Question is Closed

akhil009
 2 years ago
Best ResponseYou've already chosen the best response.0\[3547^{153}*251^{72}\]

telltoamit
 2 years ago
Best ResponseYou've already chosen the best response.2first digit: unit value changes like 7,9,3,1,7... first digit: unit value remains 1

akhil009
 2 years ago
Best ResponseYou've already chosen the best response.0can you pls elaborate it

telltoamit
 2 years ago
Best ResponseYou've already chosen the best response.27 into 7 = 49; 9 into 7 = 63; 3 into 7 = 21; 1 into 7 = 7

akhil009
 2 years ago
Best ResponseYou've already chosen the best response.0but ques is for 153 times also product of 251^72

telltoamit
 2 years ago
Best ResponseYou've already chosen the best response.2so after every 4 times it repeats. as 152 is a multiple of 4, the reptition will happen till there on the 156rd multiplication , we ll get 7 again so 7 into 1 = 7 == ANSWER
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.