Advertisements
Advertisements
प्रश्न
There are 80 cards numbered from 1 to 80. One card is drawn at random from them. Find the probability that the number on the selected card is not divisible by 8.
योग
Advertisements
उत्तर
Total number of possible outcomes = 80.
Numbers divisible by 8 are 8, 16, 24, 32, 40, 48, 56, 64, 72, and 80.
There are total 10 numbers which are divisible by 8. Number of numbers (not divisible by 8)
= 80 −10 = 70
Number of favourable outcomes = 70
Required probability is
P(E) = `("Number of favourable outcomes")/("otal number of possible outcomes")`
= `70/80`
= `7/8`
Therefore, the probability that the number on the selected card is not divisible by 8 is `7/8`.
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
