Page 16 - NUMINO Challenge_B1

Problem solving

1 Find the smallest 7-digit number that meets the Key Points
conditions below.
Start with digits in
Conditions the given position.
Use all digits from 1 to 7 only once.
The last digit is the greatest number.
The digit in the center is the difference between the
digits on both sides of the number.
The digit that comes first is 5.
The sum of the 6th digit and the digit in the center is
equal to the 1st digit.
The difference between the 2nd and 3rd digits is
equal to the 6th digit.

2 Based on the table below, fill in the digits from 1 Start with the digits
to 9. Use each digit only once. that have the
greatest sum in
between.

Sum of Between Between Between Between
the digits 1 and 3 3 and 6 6 and 7 7 and 9

5 8 21 29

13Number Puzzles