HEREDITY
BASICS OF PROBABILITY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
How many 9’s are there between 1 and 100?
|
|
10
|
|
|
99
|
|
|
13
|
|
|
20
|
Explanation:
Detailed explanation-1: -There are total 20 nines between 1–100.
Detailed explanation-2: -20 9sThere are 20 9s in between 0 to 100 One each for the numbers 9, 19, 29, 39, 49, 59, 69, 79, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, -that is 18-plus 99 with two for a total of 20.
Detailed explanation-3: -∴ 280 times the digit 9 occurs in the numbers from 100 to 999.
Detailed explanation-4: -Nine 10s made 90. The missing number is nine.
There is 1 question to complete.