"What number must be added to each of the numbers 7, 11 and 19 so that the resulting
Channel: Doubtnut
Date: 2020-04-05

"What
 number must be added to each of the numbers 7, 11 and 19 so that the
 resulting numbers may be in continued proportion? 
`3`
b. `-3`
c. `4`
d. `-4`"