Question

1+2+3+4+5+6.........+107
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Aur dum hai toh issi pehale wala question solve karke dekhao​

Answer 1

see

1 + 2 + 3 ..., + 107

107 + 106 + 105 ..... +1

adding these two equations...

= 108×107

sum of these 1 +2..107

= 108×107/2 =54×107 = 5778

Answer 2

Answer:

sn= n÷2[T1+ TN]

s107=107÷2[1+107]

=107×108÷2

=107×54

=5778

1+2+3+4+5+6............+107 =5778