alleryযদি 4, 6, x এবং 10-এর গড় 7 হয়, তবে x-এর মান কত?
A8
B9
C7
D6
Answer & Solution
Correct answer: A. 8
মোট সমষ্টি অবশ্যই 28 হতে হবে, এবং 4 + 6 + 10 = 20 বাদ দিলে থাকে x = 8।
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