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Probability Level 1

If 12 , 15 , 17 , 18 , x + 2 , x + 4 , 25 , 30 , 31 , 32 12, 15, 17, 18, x + 2, x + 4, 25, 30, 31, 32 are in ascending order and median of the observations is 22 22 , then value of x is:

19 23 22 20

Ankit Vijay by Ankit Vijay , 22, India

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1 solution

Ankit Vijay
Jun 2, 2014

= x + 2 + x + 4 2 = 22 = 2 x + 6 = 44 = x = 19 =\frac { x+2+x+4 }{ 2 } =22\\ =2x+6=44\\ =x=19

4 Helpful 0 Interesting 0 Brilliant 0 Confused

So sad. I can calculate it right but I hit a wrong button. I'm sick of my slow internet. T-T

Supathat Sukaiem - 7 years ago

Problem comes from NCERT. Too easy.

Rhishikesh Dongre - 7 years ago

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