1is d ans 9 ??
The last digit of (2137)754 is.....
plz help me ...i dunno how to solve this kinds of question....[2]
i want to learn this type....
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9 Answers
13dunno ...the ans ..may b u r rite....
plz teach me....how to do these....
1how i did:
(2130 + 7)754
= 7754 + 10m
now 7x7=49
x7 = 343
x7 =(...)1 .. i mean last digit 1
so it repets after every 4th poewers.
but 754 is not a multiple of 4 and its two less ... dat means last digit shud be 9.
622137754
last digit is same as
7754 (Is it obvious?)
Now 7^2 = 49... last digit is (-1)
Now 7^4 = xxxkljxl .. last digit is (-1)^2 =1
7752 has last digit 1
multipy by 49 last digit is 9
1hmm... mereko ek doubt yaad aya!
find last three digits of (17)256.
plz hlp in this one.
13all that i have learnt is to find the last digit....which is 1 [3]
62yes I thinkthat part is very stupid..findinglast 2 - 3digits..
I dont see a goodmethod.
