a + b = 8, b + c = 11 এবং a + c = 5 হলে, a + b + c এর মান কত?
Solution
Correct Answer: Option A
দেওয়া আছে,
a + b = 8
b + c = 11
a + c = 5
a + b + b + c + a + c = 8 + 11 + 5
⇒ 2a + 2b + 2c = 24
⇒ 2(a + b + c) = 24
⇒ a + b + c = 24/2
∴ a + b + c = 12
a + b = 8
b + c = 11
a + c = 5
a + b + b + c + a + c = 8 + 11 + 5
⇒ 2a + 2b + 2c = 24
⇒ 2(a + b + c) = 24
⇒ a + b + c = 24/2
∴ a + b + c = 12
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