A no. has 2 digits whose sum is 9. If 7 is added to the no. , it's digits get interchanged. find the no.
Answers
Answered by
1
Step-by-step explanation:
the answer is 10
may it's belps
Answered by
2
Answer:
sum = 9
one no is 9
other we consider x
x+7 is 9
x is 9-7 is 2 answer
hope it helps
Similar questions