ncert

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).

8 Answers

11
virang1 Jhaveri ·

wat is E(X)

1
big looser ......... ·

its mean
ya question is complete, its from ncert exercise 13.4

62
Lokesh Verma ·

1/36+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 :)

1
big looser ......... ·

answer is 14/3 but bro your one is 161/36

21
tapanmast Vora ·

wat's E(x)?

1
big looser ......... ·

mean

62
Lokesh Verma ·

oops 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

24
eureka123 ·

i cant understand the question even..........[2][2]......plz explain.....

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