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The sum of the digits of a two-digit number is 12 If the digits are interchanged the number is increased by 54 What is the original number?
39
What two digit number are interchanged to form a new two-digit number?
Any two digit number in which: (a) the units digit is not 0, and (b) the two digits are different will form a new 2-digit number when the digits are interchanged.
How many prime numbers from 11 to 100 are there whose digits when interchanged give a prime number?
There are four pair of mirror primes.
What is the sum of all of the two-digit primes that are greater than 12 but less than 99 and are still prime when their two digits are interchanged?
472.
How many significant digits are in 68.0?
There are three. If not, the final zero should not be present.
How many digits are present in the external anatomy of the fetal pig?
The external anatomy of a fetal pig typically has four digits on each foot, for a total of sixteen digits.
How many uncertain digits are present when some quantity is expressed in significant figures?
one
If the sum of the digits of a two digit number is 14 and the Number is 18 more then the original number with the digits interchanged what Is the number?
One way of doing this is through trial and error. Choose a random number where the digits add up to 14. There isn't that many, the numbers are:59 and 68. 5+9= 14. However 95 -59 is 36, twice as much as 18. 6+8=14. And 86-68 is 18. So the number is 68.
How many uncertain digits are present when some quantity is expressed in significant digit figures?
At most 1.
How many characters in a Canadian postal code?
Canadian postal codes, which are actually integrated with British postal codes, generally contain six digits (the digits can be numbers or letters depending on their position) with a space half way in between, e.g. T6E 2T2 is Edmonton, Alberta.
How many significant digits are in the number 0.00120?
There are three sig fig.(The final zero is significant as it is present when it would not normally be written.)
How many numeric digits in 32000 Crore?
12 digits.12 digits.12 digits.12 digits.
