Question

1+2+3+4+5+6+7+8+9+10+11+12+13+14+15
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Answer 1

Answer:

Step-by-step explanation:

hey

ur answer is 120

hope helps uhh

Answer 2

Answer:

the numbers are in AP,

$sum = n(n + 1) \div2$

n=15

sum= 15(15+1)/2

=15×16/2

=240/2

=120.

therefore the sum is 120