Study the following pattern:
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according to this pattern , the sum of odd nos . is equal to the square of no. u took....
for eg : sum of 1 and 3 is equal to the square of two because 1 and 3 are two numbers
so the sum of first 19 odd numbers is equal to the square of 19 that is 361.
similarly the sum of first 21 odd numbers is equal to the square of 21 that is 441
for eg : sum of 1 and 3 is equal to the square of two because 1 and 3 are two numbers
so the sum of first 19 odd numbers is equal to the square of 19 that is 361.
similarly the sum of first 21 odd numbers is equal to the square of 21 that is 441
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