Learning Math: Even and Odd Numbers

Mathematics Activity :
Even Numbers and Odd Numbers

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What is the difference between the sum of the even numbers and the sum of the odd numbers between 20 and 31?
5

1.	Which of the following numbers when divided by 2 leaves 1 as the remainder: 5626, 6233, 7568, 8970?


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


3.	Which of the following numbers when multiplied by 5 gives an odd number: 88, 76, 97, 66?


4.	What is the sum of the sixth, the seventh, the eighth and the ninth odd numbers after 30?


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


6.	What is the difference between the 17th and the 21st even numbers coming after 250?


7.	How many three-digit odd numbers are there?