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Find the sum of first n natural numbers....

Find the sum of first `n` natural numbers.

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Read the following and answer the questions given below. 1,2,3,4….are natural numbers or counting numbers. The sum of first 4 numbers is 1+2+3+4=(1+4)+(2+3) = 5+5 = 5xx2 =(4+1)+4/2 We can make pairs as given above and can establish a formula to find the sum of first n natural numbers as sum = (1+n)xxn/2 Find the sum of first 10 natural numbers.

Find the sum of first n odd natural numbers.

Find the sum of first n odd natural numbers.

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Read the following and answer the questions given below. 1,2,3,4….are natural numbers or counting numbers. The sum of first 4 numbers is 1+2+3+4=(1+4)+(2+3) = 5+5 = 5xx2 =(4+1)+4/2 We can make pairs as given above and can establish a formula to find the sum of first n natural numbers as sum = (1+n)xxn/2 Calculate the sum of natural numbers from 10 to 20.

Read the following and answer the questions given below. 1,2,3,4….are natural numbers or counting numbers. The sum of first 4 numbers is 1+2+3+4=(1+4)+(2+3) = 5+5 = 5xx2 =(4+1)+4/2 We can make pairs as given above and can establish a formula to find the sum of first n natural numbers as sum = (1+n)xxn/2 In the arrangement of numbers 1,3,6,10,15... 1=1 , 3=1+2 , 6=1+2+3.. What is 10^th number in the arrangement 1,3,6,10,15....

Read the following and answer the questions given below. 1,2,3,4….are natural numbers or counting numbers. The sum of first 4 numbers is 1+2+3+4=(1+4)+(2+3) = 5+5 = 5xx2 =(4+1)+4/2 We can make pairs as given above and can establish a formula to find the sum of first n natural numbers as sum = (1+n)xxn/2 What is the number at the right and of 10^th line 1 2 3 4 5 6 7 8 9 10 .............

Write the sum of first n natural numbers.

Find sum of first n natural numbers.