state gov DSSSB Junior Assistant, Steno and LDC Mock Test 2023 - 24 Quantitative Aptitude Algebra Linear Equation in 2 or more Variables
If a(a + b + c) = 60, b(a + b + c) = 75 and c(a + b + c) = 90, then value of (a + b + c)2 = ?
1
145
2
120
3
195
4
225