Math, asked by talhasi7567, 10 months ago

Find the sum of first 40 odd numbers

Answers

Answered by stsurya20

0

Answer:

1600

Step-by-step explanation:

Sum = n/2 x (a + Tn)

= 40/2 x (1 + 79)

= (40 x 80)/ 2

= 3200/2

1 + 3 + 5 + 7 + 9 + . . . . + 79 = 1600

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