Find the sum of all add numbers between 100 and 150
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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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