Q. 55.0( 1 Vote )

The first term of

Answer :

Formula used.

S_n = [a + l]

⇒ S_n = 500

⇒ a = 5

⇒ l = 45

S_n = [a + l]

500 = [5 + 45]

500×2 = n×50

n = = 20

∴ Number of terms to get sum 500 is 20

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