exam Maths Puzzle Numerical Ability

WHAT ARE ALL THE DIFFERENT 4 DIGIT COMBINATIONS THAT CAN BE MADE FROM THE NUMBERS 1-9 ?

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exam Other Question

given: triangle AFE is congruent to triangle BFC

prove: triangle DEF is congruent to DCF
STATEMENTS REASONS I have to do a powerpoint by tomorrow that includes #28 (the proof) on pg. 219 in the upper right hand corner. I have the statements typed out already, but I need to know what the