state gov Rajasthan Forester and Forest Guard 2022 Mock Test Quantitative Aptitude Algebra Identities
If a, b and c are numbers that satisfy the conditions:
a + b + c = 20 and a2 + b2 + c2 = 200
Then, what is the value of (a + b)2 + (a + c)2 + (b + c)2 ?1
420
2
450
3
440
4
600