Two-digit 7818

Find the sum of all two-digit numbers in which the digits differ by 7.

Correct answer:

s =  290

Step-by-step explanation:

a1=18 a2=29 a3=81 a4=92 a5=70  s=a1+a2+a3+a4+a5=18+29+81+92+70=290

Did you find an error or inaccuracy? Feel free to write us. Thank you!

You need to know the following knowledge to solve this word math problem:

Related math problems and questions: