Question

10 प्लस 20 प्लस 30... 200 का योगफल क्या होगा​

Answer 1

Answer:

yogfal ka meaning

Step-by-step explanation:

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Answer 2

Answer:

2100

a=10

d=20-10=10

nth term an=a+(n-1) d

an=200

a+(n-1)d = 200

10+( n-1) 10 = 200

n-1 = 190/10= 20

sum of n terms sn = n/2 [2a + (n-1) d = 10 [2*10 +19*10]

= 10 *210 = 2100