SSC MTS Model Paper 4

Question : 34 of 150

Marks: +1, -0

The number, whose square is equal to the difference of the squares of 75.15 and 60.12 is:

Solution:

Let the number be x.
Then,

x ^ { 2 } = ( 75.15 ) ^ { 2 } - ( 60.12 ) ^ { 2 }

= ( 75.15 + 60.12 ) ( 75.15 - 60.12 )

= 135.27 × 15.03 = 2033.1081

∴ x = √ { 2033.1081 } = 45.09

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