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An aeroplane flies round a square, the sides of which measure 100 miles each. The aeroplane covers at a speed of 100 m. p.h. the first side, at 200 m.p.h. the m.p.h. the fourth side. The average speed of the aeroplane around the square is

A

190

B

195

C

192

D

200

Text Solution

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The correct Answer is:
C
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ML KHANNA-MEASURES OF CENTRAL TENDENCY -Problem Set (1) (Measures of Central Tendency)
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  9. A population of values is symmetrically distributed about the constant...

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  10. The geometric mean of the series 1,2,4,8,16,....,2^n is

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  11. An aeroplane flies round a square, the sides of which measure 100 mile...

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  12. A group of 10 items has arithmetic mean 6. If the arithmetic mean of 4...

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  13. If the mean of a variate x is m, the mean of (ax+b)/(c ) where a,b,c a...

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  14. The numbers 3,5,7,4 have frequencies x,x+4,x-3,x+8. If their arithmeti...

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  15. If the mean of a set of observations x(1),x(2), …,x(n)" is " bar(X), t...

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  16. If the mode and mean of a moderately asymmetrical series are 16 inche...

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  17. The results of two colleges are as follows : then

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  18. If g(1) and g(2) be the geometric means of two series of n(1) and n(2)...

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  19. For a symmetrical distribution lower quartile is 20 and upper quartile...

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