# The sum of two numbers prime to each other is 20 and their L.C.M. is 99. What are the numbers? (a) 8 and 12 (b) 14 and 6 (c) 19 and 1 (d) 11 and 9

#### LT InfotechSkillRack on 25-Sep-2015 17:01

The sum of two numbers prime to each other is 20 and their L.C.M. is 99. What are the numbers?

(a) 8 and 12
(b) 14 and 6
(c) 19 and 1
(d) 11 and 9

on 25-Sep-2015 17:42

answer:d 11,9 lcm is 99 sum is 20
on 28-Sep-2015 14:45

ans:d 11,9 are prime L.C.M=99
on 29-Sep-2015 10:30

answr: d
on 29-Sep-2015 10:31

D-11 and 9
on 29-Sep-2015 10:40

ans:d 11,9 are prime L.C.M=99
on 29-Sep-2015 10:40

ans:d 11,9 are prime L.C.M=99
on 11-Oct-2015 21:31

d
on 13-Oct-2015 18:38

d
on 13-Oct-2015 22:19

d
on 22-Oct-2015 15:23

d
on 28-Oct-2015 12:44

d
on 19-Jan-2016 23:04

11 AND 9
on 25-Jan-2016 14:58

d
on 30-Jan-2016 18:48

d
on 8-Feb-2016 10:43

d LCM OF 11,9 is 99 and 11+9=20
on 1-Mar-2016 13:13

D
on 3-Mar-2016 10:32

d
on 12-Mar-2016 12:04

D
on 15-Mar-2016 00:05

d
on 16-Mar-2016 19:23

D-11 and 9
on 23-Mar-2016 09:47

d
on 12-Apr-2016 10:04

D
on 12-Apr-2016 11:10

D
on 26-Apr-2016 18:25

d
on 20-May-2016 18:51

11 and 9 lcm is 99 sum 20
on 24-Jun-2016 08:59

d) answer is 11 & 9
on 26-Jul-2016 18:33

11 9
on 27-Jul-2016 08:44

11&9
on 30-Jul-2016 10:20

d
on 10-Aug-2016 18:53

11 &9
on 11-Aug-2016 08:27

D
on 13-Aug-2016 12:35

None of them
on 14-Aug-2016 18:45

in the case "C" the two numbers are 19 and 1 but in this 19 and 1 are prime and their sum is 20 but their LCM is not 99 and 1 is neither a prime nor composite in the remaining cases there will be atleast one composite number
on 29-Aug-2016 10:46

d
on 30-Aug-2016 15:41

d but 9 is not prime
on 31-Aug-2016 14:58

d but 9 is not A PRIME NUMBER HENCE THE QUESTION GIVEN IS WORNG
on 9-Sep-2016 12:24

d but 9 is not a prime number
on 1-Nov-2016 17:06

11 and 9
on 19-Jan-2017 11:37

prime to each other means the numbers has to be co prime i.e, both number should have common factor 1 so a) and b) cannot be the answers since option a) has common factor 4 and b) has common factor 2 so option c) and d) are left lcm of option c) and d) are 19 & 99 respectively so final answer which satisfy both the conditions is option d) 11& 9
on 16-Feb-2017 11:36

a
on 30-Mar-2017 12:58

LCM of 11 , 9 is 11*9 = 99 SUM of 11 , 9 is 11+9 = 20 So, Ans is 11 , 9 which is option D
on 4-Jul-2017 17:08

it is elimination process so the answer for the question is 11&9 since its LCM is 99 and SUM is 20
on 5-Jul-2017 11:36

d but 9 is not A PRIME NUMBER HENCE THE QUESTION GIVEN IS WRONG
on 5-Jul-2017 23:07

lcm: 11*9=99 sum: 11+9=99 so option d) but 9 is not a prime no.
on 19-Jul-2017 12:08

D
on 24-Jul-2017 15:23

ans:d 11+9=20 L.C..M of 11 and 9 is 99. Though 9 is not a prime number , 11 and 9 are prime to each other.
on 29-Jul-2017 11:07

-:) D
on 14-Aug-2017 21:14

Gcd of 8and 12 is 4 so they are prime to eachother and gcd of14 and 6 is 2 so it is also not a prime to eachother lcm of 19 and 1 is 19 and d 11 and 9 are prime to eachother and lcm is 99 so option d is answer