Question 19
Edison forms three-digit numbers using the matchstick digit shapes shown. Turning a number upside down may produce another three-digit number; for example, 108 becomes 801. He forms a number whose upside-down version is 825 greater than the original. What is the new three-digit number?
“Upside down” means a 180° turn of the whole display, so the digit order also reverses. Use the exact digit shapes shown.
Answer entry: enter the whole number only, without units. The paper uses four shaded digits with leading zeros; ordinary integer entry is accepted here.
“Upside down” means a 180° turn of the whole display, so the digit order also reverses. Use the exact digit shapes shown.
Answer entry: enter the whole number only, without units. The paper uses four shaded digits with leading zeros; ordinary integer entry is accepted here.