Math, asked by his80, 11 months ago

Find the sum of all add numbers between 100 and 150

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Answered by Anonymous
2

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Answered by Anonymous
2

Your question

Find the sum of all odd numbers between 100 and 150?

mistaken I think it's odd number✔️✔️

Hii

you are welcome in my solution

Odd number :--- A integer Number which is not multiple of 2.

Find

sum of all odd number between 100 to 150

so

101 ,103,105,.........149

All are in AP

first term a = 101

common difference d = 103 - 101=2

tn = 149

we know that

=>tn = a + (n - 1)d

=>149 = 101 =( n - 1 )2

=>2 (n - 1)= 48

=>n - 1 = 24

=>n = 25

we know that sum of AP

=>Sn = n/2{2a +( n -1)d}

=>Sn = 25/2{202 + 24*2}

=>Sn = 25*250/2 = 25*125

=>Sn = 3125 ✔️✔️

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