Question

add fastly as you can do 1+2+3+4+5+6+7+8+9+10+11+12+13+14+15​

Answer 1

Answer:

120 is the answer hzjsvs

Answer 2

Answer:120

Step-by-step explanation:

Sum of first 'n' consecutive natural numbers =n(n+1)/2

So,

1+2+3+4+5+6+7+8+9+10+11+12+13+14+15 is the sum of first 15 natural numbers=15(15+1)/2

=15x8

=120

Hope it helps you

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