Question

there are 120 pages in a novel.then the sum of all even and odd numbers is

Answer 1

118+119=237.....is the answer

Answer 2

$\sf\underline{Step-by-step \: explanation}$

Sum of even numbers=
2+4+6+8+9+10+12+13+14+16+18+20+22+24+26+28...(And so on till 120)= 3660

(Actually, its a pattern...

2+4+6+8+10= 30

12+14+16+18+20=80

The range is 50 so, 30+80+130+180+230+280+330+380+430+480+530+580)

Sum of odd numbers= 3600

(Its pattern is...

25×1= 25

25×3= 75

Actually its about multiplying 25 with odd numbers 12 times and to sum it up)

So,

Even+odd= Sum

3660+3600= 7260.

So, the sum will be...

${\boxed{\boxed{\sf{\red{7260}}}}}$

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$\small\sf\pink{Thanks!!}$

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