Question

The 7th term of an A.P. is $$4$$ and its common difference is $$-4$$. The first term of the A.P. is ______.

विकल्प

• $$32$$

• $$28$$

• $$24$$

• $$36$$

Answer 1

The 7th term of an A.P. is $$4$$ and its common difference is $$-4$$. The first term of the A.P. is 28.

Explanation:

Since $$\mathrm{T}_{7} = a + 6d = 4$$, we get $$a - 24 = 4$$, hence $$a = 28$$.