Making numbers II

This task is about making numbers of different sizes.

Question

a)  Ina wrote down all the numbers she could using the three digits 9, 4, and 7   
young girl, Ina
497 974 749
947 794 479
 
     i)  What was the lowest number Ina made? 

    • 497

    • 974

    • 749

    • 947

    • 794

    • 479

Question

     ii) What was the highest number she made? 

    • 497

    • 974

    • 749

    • 947

    • 794

    • 479

Question 1Change answer

b)  Tana wrote down different numbers using these digits.
young boy, Tana
7 7 3
     i)   What was the lowest number Tana could have written using only two of these digits?
     ii)  What was the highest number he could have written using only two of these digits?  
     iii) What was the lowest number he could have written using all three of these digits?
     iv) What was the highest number he could have written using all three of these digits?