Math, asked by cosmicrave150066, 1 month ago

the sum of first 50 term of sequence 10 20 25

Answers

Answered by harikrishnadeka3

0

Answer:

given,

a=10, d=20-10=10 ,. n=50

therefore,

SN= n/2[2a+(n-1)d]

S50=50/2[2×10+(50-1)10]

= 25[20+49×10]

=25[20+490]

=25×510

=12750

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