Question

thrєє píєcєѕ σf tímвєr 42m,49m,63m lσng hαvє tσ вє dívídє íntσ plαnkѕ σf thє ѕαmє lєngth whαt íѕ thє grєαtєѕt pσѕѕíвlє lєngth σf plαnk

Answer 1

HCF OF 42 ,49 and 63 would be answer
so HCF of 42, 49 and 63=7m
so the answer is 7m
hope this solution would help you.