Suppose I wanted the fourth element of some list L.Which of the following puts the value of the fourth element into the variable fourth?let first::rest1 = Llet second::rest2rest1let third::rest3 = rest2let fourth::rest4 =rest3let fourth%3D(List.tail (List.tail (List.tail (List.tail L))))let fourthL|> List.tail|> List.tail|> List.tail|> List.headlet first::second::third::fourth::Llet first::second::third::fourth = LO let fourth =|> List.head|> List.tail|> List.tail|> List.taillet fourth = List.tail List.tail List.tail List.head Llet L2 = List.tai Llet L3List.tail L2let L4 = List.tail L3let fourth = List.head L4O O

Given: Adding Fourth Element to the given list.

Suppose I wanted the fourth element of some list L. Which of the following puts the value of the fourth element into the variable fourth? let first::rest1 = L let second::rest2 = rest1 let third::rest3 = rest2 let fourth::rest4 = rest3 let fourth = (List.tail (List.tail (List.tail (List.tail L)))) let fourth = |> List.tail |> List.tail |> List.tail |> List.head let first::second::third::fourth:: = L let first::second::third::fourth = L let fourth = |> List.head |> List.tail |> List.tail |> List.tail let fourth = List.tail List.tail List.tail List.head L let L2 = List.tail L let L3 = List.tail L2 let L4 = List.tail L3 let fourth = List.head L4 O O

Suppose I wanted the fourth element of some list L. Which of the following puts the value of the fourth element into the variable fourth? let first::rest1 = L let second::rest2 = rest1 let third::rest3 = rest2 let fourth::rest4 = rest3 let fourth = (List.tail (List.tail (List.tail (List.tail L)))) let fourth = |> List.tail |> List.tail |> List.tail |> List.head let first::second::third::fourth:: = L let first::second::third::fourth = L let fourth = |> List.head |> List.tail |> List.tail |> List.tail let fourth = List.tail List.tail List.tail List.head L let L2 = List.tail L let L3 = List.tail L2 let L4 = List.tail L3 let fourth = List.head L4 O O

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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