Question

find first four terms of an ap whose first term is 10 and common difference is 10​

Answer 1

Answer:

10,20,30,40 are the first four terms of given A. P.

Answer 2

Given:

We have given first term of A.P is 10 And common difference of A.P is 10.

To Find:

We have to find first four terms of A.P?

Step-by-step explanation:

• We have given First term of A.P is 10

• Common Difference of A.P is 10

• Now we know nth term is given by the formula

$a_n=a+(n-1)d$

• Now we have first term is 10

• For second term we will put a=10, n=2, d =10 in the above equation

$a_2=a+(2-1)d\\a_2=10+1\times10=20$

• For Third term we will put a=10, n=3, d =10 in the above equation

$a_2=a+(3-1)d\\a_2=10+2\times10=30$

• For second term we will put a=10, n=2, d =10 in the above equation

$a_2=a+(4-1)d\\a_2=10+3\times10=20$

Hence, first four terms of A.P are 10,20,30,40.