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iren2701 [21]
4 years ago
10

The sum of the first three terms of A.P is 18 if the first term is 4 find their product​

Mathematics
1 answer:
Nataly_w [17]4 years ago
6 0

Answer:

192

Step-by-step explanation:

The sum of the first 3 terms of the A. P is

a + a + d + a + 2d = 18, that is

3a + 3d = 18 ← substitute a = 4

12 + 3d = 18 ( subtract 12 from both sides )

3d = 6 ( divide both sides by 3 )

d = 2

Thus the first 3 terms are

4, 6, 8 and their product = 4 × 6 × 8 = 192

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