An unbiased coin is tossed 1 times. Let X denote the number of times head occurs. If P (X=4), P (X = 5) and P (X 6) are in AP, then the value of n can be (a) 7, 14 (c) 12,7 (b) 10,14 (d) none of these

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.2: Arithmetic Sequences
Problem 51E
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An unbiased coin is tossed 1 times. Let X denote the
number of times head occurs. If P (X=4), P (X = 5) and
P (X 6) are in AP, then the value of n can be
(a) 7, 14
(c) 12,7
(b) 10,14
(d) none of these
Transcribed Image Text:An unbiased coin is tossed 1 times. Let X denote the number of times head occurs. If P (X=4), P (X = 5) and P (X 6) are in AP, then the value of n can be (a) 7, 14 (c) 12,7 (b) 10,14 (d) none of these
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