NTSE Stage 2 MAT 2015 Question Paper

Question : 31 of 100

Marks: +1, -0

From among the four alternatives given below, which number replaces the question mark?

Solution:

[(7)^2-{(4)^2+(3)^2}]÷ 2=12

[(4)^2-{(3)^2+(1)^2}]÷ 2=3

[(7)^2-{(5)^2+(2)^2}]÷ 2=10

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