John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

O_er_t_o_

Complete the missing letters of the given word.

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Replace the question mark with the correct number in the below-given picture?

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111 , 113 , 117 , 119 , 123 , 137 , ?

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