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### Question Asked by a Student from EXXAMM.com Team

** Q 1810234110. ** Find the shortest distance between the lines gives by.

`vecr = (8 + 3lamda)hati - (9 + 16lamda)hatj + (10 + 7lamda)hatk`

and `vecr = 15hati + 29hatj + 5hatk + mu(3hati + 8hatj - 5hatk).`