Elitmus Exam Numerical Ability Probability

Person A And Person B Tosses Two Times a single Coins Each Find out What is the Probability That Both get Equal times Heads
1)5/16
2)1/4
3)3/8
4)1/2

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Elitmus Other Question

There are 60 students in a class and they are divided into three groups A,B,C of 10,20,30 students respectively having average weight W(a),W(b),W(c). Group A and C are merged to form a group D. A student from Group D is shifted to Group B such that average of both the groups decreases. That could be the relation explaining the condition:
a) W(a)
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