alleryStart learning →Tens digit a, units digit b, with a > b > 0. Original minus reverse?
A11(a - b)
B9(a - b)
Ca - b
D9(a + b)
Answer & Solution
Correct answer: B. 9(a - b)
The difference between 10a plus b and 10b plus a is 9a minus 9b.
Keep practising Playing with Numbers
Browse all Playing with Numbers questions for ICSE Class 8, or explore more Mathematics topics.
Related questions
No digit is 9 in a three-digit number. Increase each digit by 1. Rise in value?What is the smallest three-digit integer with digit sum 20?A three-digit number starts with 7 and has digit sum 7. The number?What remainder does 572 leave on division by 9?From 100 to 150 inclusive, how many integers are divisible by both 3 and 5?How many three-digit palindromes are divisible by 10?In three-digit palindrome A3A, 9 divides the value. Find digit A.Arrange 0,1,2 once each. Count valid three-digit multiples of 3.