Question

By what number less than 2 must be multiplied so that the last 3 figures on the right end of the product may be 791

Answer 1

igs hellp man....atleast try

Answer 2

@JamesJ ,@Tomas.A ,@Diyadiya help guys help!!!

Answer 3

help callisto!

Answer 4

this frm real numbers chapter

Answer 5

oh man...im weak with these things @_@

Answer 6

@Callisto u are the only one with a chance of doin this...so do u know how to do it?

Answer 7

Sorry i don't even understand the question :(
what number less than 2 <-- does it mean a single number?

Answer 8

yeah there is some number...its related to HCF AND LCM THROUGH EUCLID'S DIVISION LEMMA

Answer 9

Sorry haven't learnt that :(

Answer 10

Word it right, you worded it so complex.

Answer 11

its a problem in my phase-4 fiitjee package..i gave it to u the way it is worded

Answer 12

but i dont understand answer is 871

Answer 13

oh sry wait its by what number less than 2must be multiplied with 43521.....

Answer 14

i by mistake frgt to mention 43521....:/

Answer 15

Oh

Answer 16

so?

Answer 17

Let x be the number,
(435*100,000 + 521)*x = adasd...fsh791

So, last digit of x must be 1.
The answer is clearly 871, but I did this problem with logic and it's really tough to explain logic unless your communication skills are really impressive.

So... I am gonna tag @FoolForMath and @Mr.Math to see if they know some trick or the method you mentioned above.

Answer 18

btw basic multiplication is what I used.

Answer 19

its 43521

Answer 20

not 43500521

Answer 21

(435*1000 + 521)*x = adasd...fsh791

Answer 22

My bad

Answer 23

its 43*1000 +521 or 435*100+21 rite?

Answer 24

435*1000 + 521)=435521

Answer 25

yeah, again my bad :/

Answer 26

oh and u can use any method......

Answer 27

but it doesn't matter, just get the 521 separately and then multiply it my x (the assumed number).