ICS3U/C Grade 11 Computer Science

Logical Thinking #1 Logic Puzzles - Solutions

Sum Triangles Each triangle lettered A through I, has its own number value from 1 to 9. No two triangles have the same value. Each number shown in the diagram is the sum of the triangles that meet at that corner. For example, 11 is the sum of the triangles D, E and F. Can you determine the value of each triangle?

A=5 B=3 C=7 D=6 E=4 F=1 G=8 H=9 I=2 How Many Triangles This diagram is filled with triangles small, medium and large. Try to count them all. There may be more than you think! There are 15. ABE, ABF, ABI, ACF, AEF, BDI, BEI, CEF, DEI, EFK, EGL, EHK, EIL, GJK, HJL

Around the Block Find your way from START to FINISH by passing through ALL the white squares one time only. You may move UP, DOWN and ACROSS, but not diagonally.