Learning Math: Even and Odd Numbers

Mathematics Activity :
Even Numbers and Odd Numbers

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What should be added to 197 to obtain the third odd number serially after it?
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1.	What should be added to 198 to obtain the fourth odd number serially after it?


2.	In which of the following numbers is the sum of the digits an even number: 9574, 8313, 7685, 6924?


3.	Using each of the digits 2, 3, 6 once only, how many three-digit even numbers can be formed?


4.	What is the sum of the even numbers between 41 and 51?


5.	What is the greatest three-digit odd number that can be formed using the digits 6, 8 and 9 once only?


6.	What is the difference between the 23rd and the 26th odd numbers coming after 25?


7.	Using each of the digits 0, 5, 7 once only, how many three-digit odd numbers can be formed?