Question

1+2+3+4+5+6+7+8+9+10=​

Answer 1

Answer:

1+2+3+4+5+6+7+8+9+10=​

=55

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Answer 2

here , a= 1, d = 2-1 = 1 and n = 10

sum = 10/2{2×1+(10-1)1}

= 5(2+9)

= 5×11

= 55

Step-by-step explanation:

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