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College Math Practice Test 77

# Combinations Quiz Questions and Answers PDF - 77

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The Combinations Quiz Questions and Answers PDF (Combinations Quiz with Answers PDF e-Book) download Ch. 8-77 to prepare College Math Practice Tests. Solve Permutations, Combinations and Probability MCQ with answers PDF, Combinations Multiple Choice Questions (MCQ Quiz) for best online colleges for teaching degree. The Combinations Quiz App: Download free learning app for combinations, complementary combination, online math learning, implication or conditional, sum of n terms of a geometric series test prep for online college courses.

## Combinations Questions and Answers : Quiz 77

MCQ 381:

npn

1. (n+1)ι
2. 1
3. None of Above
MCQ 382:

The value of n-2Cr-2 + n-2Cr-1 is

1. n+1Cr
2. nCr
3. nCr-1
4. n-1Cr-1
MCQ 383:

Sin10°sin30°sin50°sin70° =

1. ³⁄16
2. −316
3. ¹⁄16
4. None of Above
MCQ 384:

The conjunction of two statement p and q is denoted by

1. p ↔ q
2. p → q
3. p ← q
4. p Ʌ q
MCQ 385:

If a,r and an are the first term, common ratio and the nth term respectively of the G.P then an =

1. arn
2. arn+1
3. arn-1
4. 0