Question

a=-1.25,d=-0.25 write first four terms of AP,when first term a and 'd'are given as follows ​

Answer 1

Given:

• a = -1.25
• d = -0.25

To find:

• First four terms of the A.P

Solution:

From the question, we are provided with the values of a and d. Since, we know that a means first term of an A.P,

• First term = -1.25

Still we need to find three terms. We know that,

→ d = Second term - First term

→ Second term = d + First term

→ Second term = (-0.25) + (-1.25)

→ Second term = -0.25 - 1.25

→ Second term = -1.5

Similarly,

→ d = Third term - Second term

→ Third term = d + Second term

→ Third term = (-0.25) + (-1.5)

→ Third term = -0.25 - 1.5

→ Third term = -1.75

Finally,

→ d = Fourth term - Third term

→ Fourth term = d + Third term

→ Fourth term = (-0.25) + (-1.75)

→ Fourth term = -0.25 - 1.75

→ Fourth term = -2

Hence, the four terms of A.P are -1.25, -1.5, -1.75 and -2.

Know more:

• The general form of A.P is a, (a + d), (a + 2d), (a + 3d), etc...
• Formula to find nth term of an A.P: a + (n - 1)d