Question

Which term of the Ap 4,9,14,19.....is 124 (1) 3,6,9,12.....111​

Answer 1

Answer:

i} 25.

ii} 37

Step-by-step explanation:

i} an=a+{n-1}d

where a =4 and d=a2-a1=9-4=5

n=?

an=124

124=4+{n-1}5

124-4={n-1}5

120/5=n-1

24+1=n

25=n

ii} a=3, d=3, n=?, an=111

111=3+{n-1}3

111-3={n-1}3

108/3=n-1

36+1=n

37=n

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