Q. 135.0( 1 Vote )

# An AP 5, 12, 19, ... has 50 terms. Its last term isA. 343B. 353C. 348D. 362

Here, first term = 5

Common difference = 12 - 5 = 7

Given that there are 50 terms in the AP.

To find: Last term, i.e. 50th term = a50

Since an = a + (n - 1)d

a50 = 5 + (50 - 1)7

= 5 + (49) × 7

= 5 + 343

= 348

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