Question

a box contain 2 washer,3 nuts, and 4 bolts.Items are drawn from the box at random one at a time without replacement.the probabilty of drawing 2 wahers first followed by 3 nuts and subsequently the 4 bolts is...​

Answer 1

Hope this will help you....thanks you Namaste

There are 2 washers 3 nuts 4 bolts.

Total = 2 + 3 + 4 = 9.

Order required is WWNNNBBBB.

First W ( 2 Washers are present and total objects are 9 )

Second W ( 1 Washer is present and total objects are 8 )

First N ( 3 Nuts are present and total objects are 7 )

Second N ( 2 Nuts are present and total objects are 6 )

Third N ( 1 Nut is present and total objects are 5 )

Remaining are all bolts.So, it is definite outcome. Probability is 1.

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