#### Delhi Police Exam Numerical Ability Study Material

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b) 53.5

c) 53

d) 52.5

b) 25.5°C

c) 25.6°C

d) 25°C

b) 6

c) 41 / 6

d) 12 /4

b) 3.03

c) 3.3

d) 0.033

b) 4

c) 5.5

d) 4.5

b) 16

c) 26

d) 30

b) 2xy / (x+y)

c) (x2 + y2) /(x+y)

d) Xy/(x+y)

b) 75.8

c) 75.9

d) 75.6

b) 55

c) 25

d) 35

Sum of 5 numbers = 27x5 = 135

Now , Mean of 4 numbers after exclusion of a number = 25

Sum of 4 numbers = 25 x 4 = 100

Excluded number = Sum of 5 numbers - sum of 4 numbers

= 135 - 100 = 35

b) A x

c) X/a

d) X + a

New mean = x/a