defence exam Indian Navy Fireman/Fire Engine Driver Mock Test 2024 Quantitative Aptitude Algebra Identities
यदि 2s = a + b + c, तो s2 + (s - a)(s - b) + (s - b)(s - c) + (s - c)(s - a) किसके बराबर है?
1
(a + b + c)2
2
ab + bc + ca
3
2(ab + bc + ca)
4
3(ab + bc + ca)