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In A.P, if the 8th term is 88 and the 88th term is 8, then what is the 100th term?

Question

In A.P, if the 8th term is 88 and the 88th term is 8, then what is the 100th term?

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Solution

In an Arithmetic Progression (A.P), the nth term is given by the formula a + (n-1)d, where a is the first term and d is the common difference.

Given that the 8th term is 88, we can write the equation as: a + 7d = 88 ---- (1)

Also given that the 88th term is 8, we can write the equation as: a + 87d = 8 ---- (2)

Subtract equation (2) from equation (1), we get: -80d = 80 Solving for d, we get d = -1

Substitute d = -1 in equation (1), we get: a + 7(-1) = 88 a - 7 = 88 Solving for a, we get a = 95

Now, we can find the 100th term using the formula a + (n-1)d: 95 + (100-1)(-1) = 95 - 99 = -4

So, the 100th term of the A.P is -4.

This problem has been solved

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