If a + b + c = 12, a + b = 4, and a + c = 7, what is the value of a?
Solution
Correct Answer: Option B
দেওয়া আছে,
a+b+c=12 ----- (1)
a+b=4 ----- (2)
a+c=7 ----- (3)
(2) + (3)
2a+b+c=11 -----(4)
(4) - (1)
or, 2a+b+c=11
a+b+c=12
-------------------
বিয়োগ করে a=-1
a+b+c=12 ----- (1)
a+b=4 ----- (2)
a+c=7 ----- (3)
(2) + (3)
2a+b+c=11 -----(4)
(4) - (1)
or, 2a+b+c=11
a+b+c=12
-------------------
বিয়োগ করে a=-1
Practice More Questions on Our App!
Download our app for free and access thousands of MCQ questions with detailed solutions