If common difference of
Ap is 4 find the value of
a20-a 12
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Given
Common Difference, d = 4
an = a + (n - 1)d
a20 = a + (20 - 1)d = a + 19d = a + 19*4 = a + 76 ——> 1
a12 = a + (12 - 1)d = a + 11d = a + 11*4 = a + 44 ——>2
a20 - a12 = (a + 76) - (a + 44)
a20 - a12 = a + 76 - a - 44 = 76 - 44 = 32.
Therefore a20 - a12 = 32 ——> Answer
Common Difference, d = 4
an = a + (n - 1)d
a20 = a + (20 - 1)d = a + 19d = a + 19*4 = a + 76 ——> 1
a12 = a + (12 - 1)d = a + 11d = a + 11*4 = a + 44 ——>2
a20 - a12 = (a + 76) - (a + 44)
a20 - a12 = a + 76 - a - 44 = 76 - 44 = 32.
Therefore a20 - a12 = 32 ——> Answer
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