JEE Main 7 Jan 2020 Shift 1 Solved Paper

Section: Mathematics

Question : 58 of 75

Marks: +1, -0

An unbiased coin is tossed 5 times. Suppose that a variable X is assigned the value k when k consecutive heads are obtained for k = 3, 4, 5 otherwise X takes the value –1. Then the expected value of X, is :

[7-Jan-2020 Shift 1]

3
16
−
3
16
1
8
−
1
8

Validate

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