Question

$\huge\red{Question}$



In an AP, the first term is -4, the last term is 29 and the sum of all its terms is 150. Find its common difference.


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Answer 1

Answer:

3

Step-by-step explanation:

sum= n/2(a+l)

150= n/2(-4+29)

300= n(25)

n= 12

last term = 29

a+(n-1) d= 29

-4+(12-1)d= 29

11d= 33

d= 3

Answer 2

Answer:

25 and the 121 is the answer