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An ap 5,12,19 has 50 terms..... …

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An ap 5,12,19 has 50 terms..... and last terms is

Posted by Ritika Maddhesiya 5 years, 2 months ago

CBSE > Class 10 > Mathematics

4 answers

Shubham Saxena ???? 5 years, 2 months ago

[ An = A + ( n - 1 ) D ],, A1 - A2 = 12 - 5 = 7 ,, A50 = 5 +( 50 - 1 ) 7 ,, = 5 + 49 × 7 = 343 + 5 = 348 .. hence proved .. thank you

... Yang ... 5 years, 2 months ago

“348”. HoPe It HeLpS yOu??

Mehak Bajaj 5 years, 2 months ago

a = 5 , d = a2 - a1 = 12 - 5 = 7 , n = 50 , an = ? Solve : a50 = a + (n - 1)d = 5 + (50-1)7 = 5 + (49)7 = 5 + 343 a50=348

Omprakash Op 5 years, 2 months ago

A= 5 ,common difference =a2-a1. => 12 - 5 = 7. So the 50 terms is a50= 5+(50-1)7. a50=348

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