SSC (Marathi Semi-English) 10thMaharashtra State Board
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# The First Term and the Common Difference of an A. P. is 10,000 and 2000 Resectively. Find the Sum of First 12 Terms of the A.P - SSC (Marathi Semi-English) 10th - Algebra

#### Question

The first term and the common difference of an A. P. is 10,000 and
2000 resectively. Find the sum of first 12 terms of the A.P.

#### Solution

a = 10,000, d = 2000 , S12 = ?

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

∴ S_12 = 12/2 [2xx10,000+(12-1)xx 2000]

=6(20,000+11 xx 2000)

=6(20,000 + 22,000)

= 6xx42,000)

=2,52,000

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#### APPEARS IN

Solution The First Term and the Common Difference of an A. P. is 10,000 and 2000 Resectively. Find the Sum of First 12 Terms of the A.P Concept: Arithmetic Progression.
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