Question

ARE BRAINLY KE ✌VIDVANO
PLEASE HELP KAHAN HO ?

______________________
FIND THE SUM OF ALL ODD NUMBERS BETWEEN 100 AND 300....
_____________________

PLEASE BATAO NA MATHS KE ARYA BHATTA'S❤❤​

Answer 1

Step-by-step explanation:

Make an Ap for that

a ( first term) = 101

d(common difference ) = 2

an( last term ) = 299

from we calculate (n) total terms

means total odd no. between 100 and 300

according to formula : an= a +(n-1) d

put the values

299 = 101 + (n-1) 2

299 -101 = (n-1)2

198 /2 =n-1

99 =n-1

100 = n

means total 100 odd number

the sum of the ap =

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

= 50 ( 202 + (99) 2)

= 50(202 + 198 )

= 50 ( 400)

= 20,000

your answer is 20,000