Question

whats the units digit for (52^97)*(43^72)

Answer 1

like how many digits the answer will be ?
or what is first digit ?

Answer 2

hundred,ten,unit..........units digit is needed (one digit)

Answer 3

what lol ?

Answer 4

Dude man there's like 285 decimal places

Answer 5

haha bat :P

Answer 6

ok just determine which digit you want to find hehe

:P

Answer 7

10^284 idk what it's called

Answer 8

lets assume ans will be .....88999812
here units digit is 2

Answer 9

115359438714681346382145850061896213461923232053969372763963859870671636459648757732966007126670442160564203941945826884169658186442957982512790889307915775164917252041299013231302130473445843179328581228029719622838038897741862629063384847601854612992902492312967602215395516924035072

Answer is 2.
:"D

Answer 10

ohhh lol i asked u that :o
so u wanna first digit :P
ok
(52^97)*(43^72) mod 10

Answer 11

xD

Answer 12

yeah this is bat :P
can u solve it ?

Answer 13

DLS :P

Answer 14

brb ill solve it using mod thingy

Answer 15

Tis 2

Answer 16

you need to take mod 10 right ?

Answer 17

yes

Answer 18

take it

Answer 19

you have done several problems like this before, right ?

Answer 20

(52^97)*(43^72) mod 10

reduce

Answer 21

yes but it is still confusing

Answer 22

2^97 and 3^72

Answer 23

thats a good start :)

Answer 24

(52^97)*(43^72) mod 10

(2^97)*(3^72) mod 10

Answer 25

whats next

Answer 26

(2^19)(4)*(7^24)

Answer 27

oh the question been taken xD

Answer 28

(2^3)(2^6)*(-1)

Answer 29

step by step. see if below makes sense :

(52^97)*(43^72) mod 10

(2^97)*(3^72) mod 10

(2^97)*(3^2)^36 mod 10

(2^97)*(-1)^36 mod 10

(2^97) mod 10

Answer 30

Ganeshie for OS presidency xD

Answer 31

-.-

Answer 32

<3

Answer 33

i only went for 2 mnts xD
and come back found it taken lol

Answer 34

moshera mo monsheran meh damoh

Answer 35

u ingored (-1) because its even power?

Answer 36

(-1) was not ignored.

(-1)^36 = +1

Answer 37

ohh

Answer 38

Oh sorry i skipped a step, see if below looks okay :

(52^97)*(43^72) mod 10

(2^97)*(3^72) mod 10

(2^97)*(3^2)^36 mod 10

(2^97)*(-1)^36 mod 10

`(2^97)*(+1) mod 10`

(2^97)mod 10

Answer 39

@ikram002p stop cussing >.<
show him how to reduce (2^97)mod 10

Answer 40

u started -.-
u show him

Answer 41

@mathmath333 happy with the reduction so far ?

Answer 42

yes its coming 2

Answer 43

looks good !

Answer 44

yes

Answer 45

as a reduce in case u wanna something less than 10
(2^97)mod 10=(2^97)mod 5 ( since 10=2*5) and (2^97 =0 mod 2)

so work on this
(2^97)mod 5

just for information :P

Answer 46

what is all this mod mod :/

Answer 47

yes