Question

1+3+5+. +199, then the sum of AP is a)10000 b) 10,500 e) 11,000 D) 10,8006 ​

Answer 1

Answer:

PLS MARK BRAINLIEST & ♥️⭐⭐⭐⭐⭐

Step-by-step explanation:

AP is 1,3,5,7....199

a=1,d=2 and last term l=199

tn=a+(n−1)d⇒199=1+(n−1)×2⇒2n=200n=100∴sum=2n[a+l]=2100[1+199]=2100×200=10000

Answer 2

Answer:

AP is 1,3,5,7 .... 199 a = 1 , d = 2 and last term I = 199 tn = a + ( n - 1 ) d 199 = 1 + ( n - 1 ) * 2 2n = 200 n = 100 sum = n2 [ a + 1 ] = 1002 [ 1 + 199 ] = 1002 ...

Step-by-step explanation:

I hope I helped you