11wat is E(X)
Two numbers are selected at random (without replacement) from the first six positive integers. Let X denote the larger of the two numbers obtained. Find E(X).
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8 Answers
1its mean
ya question is complete, its from ncert exercise 13.4
621/36+2x3/36+3x5/36+4x7/36+5x9/36+6x11/36
=(1+2.3+3.5+4.7+5.9+6.11)/36
= (1+6+15+28+45+66)/36
check if this is correct :)
62oops my mistake ..
i did this with replacement..
so the answer will be
0/30+2x2/30+3x4/30+4x6/30+5x8/30+6x10/30
=(2.2+3.4+4.6+5.8+6.10)/30
= (4+12+24+40+60)/30
= 140/30
= 14/3
24i cant understand the question even..........[2][2]......plz explain.....