To find out how often the sum of the digits on a digital clock equals 9 in a 12-hour period, we need to consider the possible combinations. The sum of the digits can be 9 in the following cases: 09:45, 10:35, and 12:24. Therefore, the sum of the digits equals 9 three times in a 12-hour period.
36 times
36 times. Hint: Seven, eight and nine can all be discarded.
Expressed in digits, 3.3 million is equal to 3,300,000.
Expressed in digits, this is equal to 1,002,003.
A dozen is equal to 12. The sum of the digits of 12 are 1 + 2 = 3.
36 times
36 times
There are 93 such events.
36 times. Hint: Seven, eight and nine can all be discarded.
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57 times in 12 hours, so in 1 day it would be 114.
A quarter on a clock is equal to 15 minutes.
They are equal to whatever they are equal to.
6 significant digits.
Pigeons do not have digits like fingers or toes. Instead, they have claws on their feet, typically four on each foot.
A trick to see if a number is divisible by 3, 6, or 9 is to use something called the digital root.First, add all the digits up:3+8+5+2 = 18We want a single digit, so add the digits in 18 (from the previous step) up:1+8 = 9The nine (a single digit) is called the digital root.If a digital root of a number is equal to 3, 6, or 9 than the number is divisible by 3.If a digital root of a number is equal to 3, 6, or 9 AND the number is even, than the number is divisible by 6.If a digital root of a number is equal to 9, than the number is divisible by 9.The digital root of 3852 is 9, and 3852 is even, so using the rules above the number is divisible by 3, 6, AND 9.
Expressed in digits, 3.3 million is equal to 3,300,000.