Math, asked by avisk, 1 year ago

an integer is chosen at random
from 10-90. find probability of
getting number divisible by 6...?

Answers

Answered by lastbenchstudent
1

p(divisible by 6) = total number divisible by 6 in range / total number in range

total number in range= 90-10+1= 81

first number in range divisible by 6 is 12 and last is 90.

lets find out total number divisible by 6

12, 18, 24. . . . 90

lets find it by ap

last term is Tn = 90

first term is a =12

common difference d = 6

Tn = a + (n-1)d

90 = 12 +(n-1)6

6n +6 =90

n = 84/6

n = 14

so total number divisible by 6 in rane is 14.

now

p(divisible by 6) = 14/81

please .mark it brainliest if it helps


avisk: +1 kyu kiya..?
harjotsinghbhinder13: +1 tab karte hai jab between likha ho, but is question main toh from likha hai isliye total outcomes 90 hi rahengi
harjotsinghbhinder13: and it is a question from probability not from AP
lastbenchstudent: Question me mention hai ki from 10 to 90 any 1 number is picked randomly so if you will count you will find total of 81 numbers. Also to find total number divisible by 6 in the given range i used Ap, we should use Ap because this range can be very large so this is the good approach to find total count.
harjotsinghbhinder13: from ka matlab hota hai से and in this question 10-90 is 90
harjotsinghbhinder13: jaise hum kethe hai 2 से 5 toh kitne number hue 3
lastbenchstudent: +1 to include number 10 too. This is general formula to find total number between a given consecutive series of natural number

range = end - start + 1

for example from 10 - 20
lastbenchstudent: from 10-20 => 20-10+1 = 11
from 1- 50 => 50-1+1 = 50
harjotsinghbhinder13: ok
Answered by harjotsinghbhinder13
0
Total outcomes=90

Probability=Favourable outcomes
-------------------------------
Total outcomes

Favourable outcomes=12,18,24,30,36,42,48,54,60,66,72,78,84,90

==>P(divisible by 6)=14/90
=7/45 Answer



avisk: ye galt hai
harjotsinghbhinder13: ok thx
harjotsinghbhinder13: toh bhai report kyu kiya
harjotsinghbhinder13: vase keh dete
harjotsinghbhinder13: main apna answer delete kar leta
avisk: kyu kuch ho gaya kya..
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