###### Question 3819 – SQL

May 3, 2024###### Question 9502 – Relational-Algebra

May 3, 2024# Question 10710 – GATE 2007-IT

Suppose there are two coins. The first coin gives heads with probability 5/8 when tossed, while the second coin gives heads with probability 1/4. One of the two coins is picked up at random with equal probability and tossed. What is the probability of obtaining heads ?

Correct Answer: C

Question 1 Explanation:

Each coin has equal probability to pick i.e., 1/2.

The probability of obtaining heads

= (1/2)(5/8) + (1/2)(1/4)

= (5/16) + (1/8)

= 7/16

The probability of obtaining heads

= (1/2)(5/8) + (1/2)(1/4)

= (5/16) + (1/8)

= 7/16

7/8

1/2

7/16

5/32

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