DSSSB · Mathematics
If the average of a, b and c is x and ab + bc + ca = 0, then find the average of a², b², c².
- 3x²
- x²
- x3
- 3x
यदि a, b और c का औसत x है और ab + bc + ca = 0 है, तो a², b², c² का औसत ज्ञात कीजिए।
- 3x²
- x²
- x3
- 3x
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