Compute (917). You are told that (615)=5005 and (815)=6435.
Solution — click to reveal
By Pascal's Rule, (917)(917)(917)(917)(917)(917)=(916)+(816)=(815)+(915)+(715)+(815)=(815)+(15−915)+(15−715)+(815)=(815)+(615)+(815)+(815)=6435+5005+6435+6435=24310