Question

How many two digits number are there such that on reversing the digits, the number changes by a multiple of \( 5 \)?

Answer 1

9 ?

Answer 2

How, give examples.

Answer 3

id say 9 as well after working it out...

they are 15,25,35,45,55,65,75,85.and 95

Answer 4

you want a multiple of 5 right ? so I guess maybe 51, 52, 53, 54, 55, 56, 57, 58, 59

Answer 5

no he wants that the number should change by a multiple of 5

Answer 6

*number changes by a multiple of 5*

Answer 7

the diff between original no. and changed no. should be a multiple of 5....rite FFM?

Answer 8

I am not sure I guess it's of the form \( 10a+b = 5\times k \times 10b+a \), but then there will be only \( 1: 55 \) but I am not sure.

Answer 9

61?

Answer 10

61 when u reverse equals 16 so diff. so no. changes by 45 that is a multiple of 5

Answer 11

like this many no.s will come, isn't it?

Answer 12

16 also so till now 16,61
@aadarsh:it is only fr 2 digit nos. read the question

Answer 13

yeah,

Answer 14

there wont be many

Answer 15

27,72

Answer 16

27,72

Answer 17

38,83

Answer 18

49,94

Answer 19

Correct

Answer 20

only 8 numbers FFM

Answer 21

yeah, so 4 pairs

Answer 22

yeah 4 pairs

Answer 23

ow changes here means difference ?

Answer 24

yup