# Can you express this orderly Palindromic Devil in strict ascending Pandigital form?

Given:

Devil as you know is $$666$$

Using digits 1 to 9 in strict ascending order and only three mathematical signs ( +, -, /, x ... of these are allowed), write the Pandigital expression

$$666 =$$

• Parentheses or concatenation? – Jonathan Allan May 17 at 18:54
• Concatenated Numbers only..no other operators other than specified – Uvc May 17 at 18:57

Assuming that concatenation is allowed

$$1234 – 567 + 8 – 9 = 666$$ (using three signs: -, + and -)

Here's one:

$$666=123+456+78+9$$

(I initially thought this was one, but the restriction being made is to use three operation instances, rather than three of the set of allowed operations)

$$666=123+45-6+7\times 8\times 9$$

• Only 3 mathematical signs permitted as per the puzzle – Uvc May 17 at 19:09
• yeah plus, minus and multiply. – Jonathan Allan May 17 at 19:10
• Oh only three instances ? – Jonathan Allan May 17 at 19:11
• Found one using three instances and updated. – Jonathan Allan May 17 at 19:21