[(J ⊃ K) • (K ⊃ L)] ⊃ (∼L ⊃

question 265

Multiple Choice

[(J ⊃ K) • (K ⊃ L) ] ⊃ (∼L ⊃ ∼J)
Which of the following propositions is a proper assumption for conditional proof to prove that the above wff is a logical truth of PL?

• A) [(J ⊃ K) • (K ⊃ L)] ⊃ (∼L ⊃ ∼J)
• B) [(J ⊃ K) • (K ⊃ L)] ⊃ ∼L
• C) (J ⊃ K) • (K ⊃ L)
• D) J ⊃ K
• E) J

Understand the concepts of standard costing, including the calculation of various variances.

Analyze the implications of flexible and static budgets.

Distinguish between flexible budget variance, labour rate variance, and labour efficiency variance.

Interpret variable overhead efficiency variance and its impact on production cost control.

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