Which term of the arithmetic progression 3, 8, 13, ..... is 55 more than its 20th term?
A) 29th term B) 31st term C) 25th term D) 27th term
Answers
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5
a = 3
d= 5
ATQ
a + 19d + 55= a + (n-1)d
19d +55 = (n-1)d
95 +55 = (n-1)5
150/5 = n-1
n = 30+1 = 31
Option B is correct
d= 5
ATQ
a + 19d + 55= a + (n-1)d
19d +55 = (n-1)d
95 +55 = (n-1)5
150/5 = n-1
n = 30+1 = 31
Option B is correct
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