Q. 5 B4.5( 2 Votes )

# <span lang="EN-US

Starting from 50 the first number divisible by 6 is 54, this series will go forward as 60, 66 and so on

And moving back from 350 the last number will be 348

We know
tn = a + (n-1)d

348 = 54 + (n-1)6

348-54 = 6n-6

6n = 300

n = 50

t15 = 54 + (15-1)6

t15 = 138

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