Question

heyy....❤___ what is the formula to find last term in ap​

Answer 1

Step-by-step explanation:

First term = a

Common difference = d

Last term = l = a + ( n - 1 ) d

Sum = a + a + 2d + ..... + l - 2d + l - d + l

Reverse the order

Sum = l + l - d + l - 2d ...... + a + 2d + a + d + a

Adding both

2 × Sum = a + l + a + l + a + l .........

2 × Sum = n ( a + l )

Sum = n/2 ( a + l )

#answerwithquality #BAL

Answer 2

Answer:

Bhabhi ji aap ne mera dil tod diyaaa