English and Logical Reasoning Prep GuideLogical ReasoningChart Logic
array lll 7 & 3 & 2 4 & 9 & 6 2 & 1 & 5 69 & 91 & ? array
Options
- A58
- B51
- C65
- D64
Correct answer
C. 65
Step-by-step solution
Columnwise First Column (7)^2+(4)^2+(2)^2=49+16+4=69 Second Column (3)^2+(9)^2+(1)^2=9+81+1=91 Third Column (2)^2+(6)^2+(5)^2=4+36+25=65