1.      (a) A number has exactly 8 factors. Two of the factors are 6 and 21.

(i) List all the factors of the number.

(ii) State the number

(b) At a fund-raising event, May wants to sell single-scoops of ice-cream in a cone. Ice-cream cones are sold in boxes of 12. Each tub of ice-cream can make 38 single scoops of ice-cream. What is the minimum number of tubs of ice-cream she should get to ensure that there is no come or ice-cream remaining?