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| 1. r=p-q | =7-13=91 | r=11-23=253 |
| 3.()=r-p-q+1 | ()=72 | ()=220 |
| 4. s, () 0<s<<() | s=5 | s=31 |
| 5./s-t=1(()) | 5-t=1(mod(72))t=29 | 31t=l(mod(220))t=71 |
| 6.s, | s=5,r=91 | s=31,r=253 |
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