7. Find the sum of 12 terms of an A.P. whose nth term is given by an = 3n + 4(a) 262(b) 272(c) 282(d) 292

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Pawan Prajapati · Accepted Answer

Answer: aExplaination:Reason: Here an = 3n + 4∴ a1 = 7, a2 – 10, a3 = 13∴ a= 7, d = 10 – 7 = 3∴ S12 = 122[2 × 7 + (12 – 1) ×3] = 6[14 + 33] = 6 × 47 = 282

10 grade maths> 7. Find the sum of 12 terms of an A.P. wh...

7. Find the sum of 12 terms of an A.P. whose nth term is given by an = 3n + 4(a) 262(b) 272(c) 282(d) 292

Harshit Singh , 3 Years ago

Pawan Prajapati

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10 grade maths> 7. Find the sum of 12 terms of an A.P. wh...

7. Find the sum of 12 terms of an A.P. whose nth term is given by an = 3n + 4(a) 262(b) 272(c) 282(d) 292

Harshit Singh , 3 Years ago

Pawan Prajapati

Provide a better Answer & Earn Cool Goodies

LIVE ONLINE CLASSES

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