# maths

The 12th term of exceeds the 3rd term by 36 of an a.p
If it's 16th term is 64 find first term and common difference

1. 👍 4
2. 👎 0
3. 👁 367
1. a+11d - (a + 2d) = 36
9d = 36
d = 4

term(16) = a+15d = 64
a + 60 = 64
a = 4

so a = 4, d = 4

1. 👍 4
2. 👎 0
posted by Reiny

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